BAW9DV

Merry Christmas to All!I, too, just got the PSS 757 from JustFlight via the download service (present from the wife).Install went well and I see that the JustFlight version is VER 1.0. I note from others here referring to this, that JustFlight's version 1.0 is the equivelent of PSS's Ver 1.3The install went fine. However, I cannot load the tutorial flight PSS752ybbn (for the Brisbane to Sydney flight). Attempting to load this flight results in an "AIRCRAFT INITIALISATION FAILURE - PW Rear Hatch Exit HOUSE" or similar such error. Please note that I first loaded the default Seattle/Cessna flight from the Creat A Flight menu.I tried manually loading a BA 757-200 RR version and placing it at Brisbane, however, I cannot get going with the tutorial because loading an aircraft this way, results in no display of the PANEL SWITCHER (I tried all the SHIFT + options but although I can get the various sub-panels to show, I can't get the PANEL SWITCHER to appear) and also no EXT. POWER from the ground is available - so I cannot get the aircraft running (APU will not work without ground air).Anyone got any ideas? Re-install?Thanks for your time,cheers,Lee

Hi,Sorry, I don't know your name as you don't give it....If you go to the Navdata site, and do a lookup on the SIDSTARS page for EGLL, the latest zipfile there DOES have the correct SIDs and STARs for Heathrow with the SOPIT intersection defined.This waypoint is located on the Bovingdon STAR (BNN4A) when you arrive into the Heathrow area from the north. There should also be a level constraint of FL150 overhead this waypoint.If you do not have the current AIRAC database for your FMC, you MAY get an error with your SID/STAR files but generally it should work ok.The other solution is to define SOPIT as a FIX using the PLACE/BEARING/DISTANCE function of the FMC. See the manual for more details on this.Hope this is helpful to you.Regards,Lee James

Hi again,Just wanted to say that after two online flights, one a 12-hour hop from EGKK to FACT and another today from EGCC to EGLL, I seem to have cured the memory errors.I even installed the new LHR2008 scenery and did a test flight today and another online trip this evening - all solid as a rock and the PMDG 744 flies really well!I'm happy :-)I'd like to thank all those who have contributed to this thread and who have assisted me (knowingly or unknowingly) in eradicating the problem.Now, back to flying the big bird !!cheers,Lee

Hi George,>>This is a great post, very informative by the original poster,<>can I just ask one, maybe simplistic question, and I'll give out the usual disclaimer about being computer illiterate, there was a point brought up in this thread regarding FS9 loading scenery from ridiculous distances to where your aircraft is in the world, so can I take that to mean that I can disable certain scenery before I fly? ie I'm flying Edinburgh Scotland to Hannover Germany and I diable myPunta Cana, Canary Island, Boston Logan airports etc just keeping active the airports or add on scenery along and surrounding my route? and does this only apply to add on scenery, ie if I'm flying in Europe only can I disable default USA, Asia etc? Guidance would be appreciated<

Hi Guys,Interesting thread here....As someone who has flown the PMDG744 since it was released and who has been experiencing OOMs for some 4 to 5 months now, I would just like to chime in here.After loads of advice about what to do with my memory and Virtual memory, RAM and hard disk space, I firstly added another GB of RAM to make 2GB on my Pentium 4 3.4GHz system. Whilst the programmes I use when I fly FS9.1 benefitted from this extra RAM and seemed to run smoother (I fly online mostly with the PMDG744, ActiveSky 6.5, SB3 and BAV ACARs and sometimes ServInfo thrown in for good measure - all on the same PC!), it did not solve the OOMs.Next, I set up virtual memory to "let Windows manage it" and set a 2GB pagefile on my C: drive (230GBs - 128GBs free) and another 2GB pagefile on my second internal F: drive (76GB - 58GB free). This still did not solve the OOMs but it did make for less hard disk activity, it seems. Then, I did a re-install of all the PMDG add-ons I have (the 737NG plus the -800/900 update, the 744 and the 74F freighter). Still no solution to the OOMs although some strange activity in the 747 has gone away and it "seems" to fly smoother.The other day, I removed all my addon scenery from the Scenery Library list (just deleted the installs from the library list - but left the scenery install folders in place to add back later) back from about when this all began to happen.From about 5 months ago I have not been able to complete a flight over about 2 hours - and it always shuts down with the OOM right about turning finals! Even the long hauls of about 7 hours or so (Dubai) went flawlessly right up until final approach...Yesterday, I attended the South African VATSAF Spring FlyIn along with many other pilots and flew the 11 hour 37 minute trip down to Cape Town. I only left the FACT scenery and mesh and my UK2000 sceneries available in the scenery library..... and guess what? No crash or OOM at all! Nothing but a perfect flight! A real joy for me!I have done considerable delving into this issue over the last 3 months or so. The PMDG744 by itself, is not at fault. Issues do result from interaction where badly coded sceneries are installed and the PMDG744 is in use. PMDG are not themselves at fault, since they cannot plan for all conflict possibilities. But there is evidence that complicated aircraft addons for FS9, DO conflict with ppossibly badly coded sceneries. Not necessarily complicated sceneries - I fly into and out of FlyTampa's Vienna and the Mega Airport Frankfurt with no issues - but any sceneries where there are, shall we say, small faults (AFCADs?) will trigger the OOM. Note that when this happens, my ActiveSky and ACARs programmes were left running! Only FS and SB shutdown probably the latter because it runs as a module inside FS.The Modules point is an interesting slant on this and something I had not considered. What about Autosave? This is a DLL file too. Hopefully it is not at fault...Just my two cents,Take care,Lee

Ryan,>>This is exactly right based on what I know as well... That is absolute nonsense where someone said that your pagefile should be at least twice the size of your RAM. The OS swaps to the pagefile (aka "disk thrashing") when it runs out of physical memory - on a 2GB machine this will almost never happen unless you're running a demanding game like FS or doing big time photo/video/music editing. If I had 16GB of RAM for instance (which is possible on 64 bit machines), that would be absolutely ridiculous to say I needed 32GB of pagefile lol... The whole point of having huge amounts of RAM is to minimize any pagefile use at all.<>Leave it set to system managed guys, the OS is smart enough to resize the file when it needs to. The OOM errors are technically a user address space error, not anything having to do with physical RAM or the pagefile. It's a limitation of 32 bit operating systems that we're starting to push up against. Hopefully 64 bit will start to catch on and we'll be rid of this.<

Jan and Jure,>>for what it's worth, I also have FlyTampa Vienna, but noUltimate Terrain. My every flight to LOWW in the PMDG B744 wassuccessful. And I had quite a few, since I fly in Europe a lot. <

Hello Jure,Thanks for the kind words....Yes, I had fun yesterday! I have not tried the PMDG744 with LHR2008 since I removed the scenery as stated. What I might do is re-install the LHR2008 scenery and repeat the test I did when I first got the problem.I took off from LHR2008 and climbed out on the WUBUN sid, to 20,000 feet heading up to Honily. Then I circled back to Honily and flew the BNN4A star into Heathrow. When I got within 14 miles of the airport, the OOM appeared and FS actually crashed to the desktop.Now that I have hopefully nailed down the OOM error by removing the scenery that obviously was in conflict with the 744, I will re-install LHR2008 and see if it works. There have been users who have successfully flown the PMDG744 into and out of the new LHR2008 scenery with no issues so its worth a try.I'll check the forums over there! Thanks for the tip!Cheers,Lee

Hi,Well - touch wood, it seems that my Out-Of-Memory errors might be cured at last!Over the last day or so, I deleted all the add-on scenery that I have installed since these issues began. Not completely deleted of course, just deleted them from the Scenery Library listing in FS9 (I have left the add-on scenery installations in place and captured images of the listing order for later but have removed them from FS, thus allowing the database to re-draw itself).Yesterday, was the South African Spring Flyin to Cape Town. I already have mesh terrain for the African continent and had the Cape Town airport scenery installed. I left this installation untouched along with all my UK2000 series UK airport installations. Everything else was pretty much removed.I powered up the British Airways PMDG 747-400 (G-CIVC) on the ramp at Gatwick around 8:30am local time yesterday and loaded 153 Metric tonnes (337,307lbs) of fuel into her tanks for the following routing out to Cape Town:-EGKK BOGN1M SID DRAKE DCT SITET UN859 BALAN UL152 MAKOX UN860 VLC DCT HAMRA UA34 MOS UA604 SIHAR UM114 BIDOM UG855 NY UA608G TATAT UA608 TYE DCT DIBSI UR983 GAPAK DCT TERBA DCT IBLOK DCT WBV UN188 XUDAN UN188 OKNOL UQ45 EVUKI EVUKI1A STAR FACT RWY 01 with VectorsDistance was 5367 nautical miles and this route was flown the day before yesterday by the real world BA057 out of Heathrow. On a foggy day with pretty horrible visibility, we headed out to runway 26L and waited for a 767 to depart before blasting down the runway and lifting into the dreary, fog-laden sky. We passed 8000 feet before the fog finally gave way to blue skies with flat clouds on top of the fog. Flying online with VATSIM, I was one of 12 British Airways Virtual pilots who flew this trip and I had lots of company on the BAV Company Frequency, all the way down over Africa.The flight took 11 hours and 37 minutes with some 50 minutes of this flight spent in the hold over ROBBIN ISLAND (5 turnes) before being vectored slowly down in the darkness to an easy approach into runway 01.And guess what? NO OUT-OF-MEMORY ERRORS AT ALL! The aircraft perfomed flawlessly through nearly 12 hours of online flight with ACARs, SB, ServInfo and ActiveSky all running togther on the one PC! It was a great trip finished with a manual landing from 9 miles out (the controller took me on a 19 mile final being number 3 to land)*******************************It seems that I can confirm the problems caused by some scenery installations with the use of the PMDG 744. Note that I never got this with the 737 product - until I added LHR2008. Now it remains to further test fly this setup and then slowly add scenery back to see which ones inhibit the use of this aircraft and cause issues.My thanks to those of you here who have offered advice and support. And my thanks to Robert and PMDG for a wonderful aircraft which I just love to fly - wife and children permitting!Take care,kind regards,Lee

Hi,I understand your frustration here! This seems to happen a lot when you have shutdown FS and then resume a flight sometime later - or when FS has shutdown after a programme crash and you resume the flight with a saved position (with Autosave for example).For some unknown reason, LNAV refuses to engage! I usually turn left or right about 30 degrees using Heading Select - then after 20 seconds I turn back towards the course and re-engage LNAV .... and lo and behold it all re-engages again!Hope this helps,regards,Lee

Hello Sam,>>Ooops. There is only ONE page file! It should be on your bootdrive. Do not set up a page file on any other drive. Do not set up two page files. One page file, on your boot drive. . . . and Do NoT hard-set the page file (virtual memory) size. Let the system control the page file size . . . <>"Make sure your XP (or Vista) Page File (virtual memorysetting) is set to "System managed size." (Control panel >System> Advanced> Performance> Advanced> Virtual Memory>Change)" This is all good computer hygiene . . . but page file (aka,>"virtual memory") does not cause this type of OOM issue. <

Hi Sam,Ok, today with the assistance of my brother-in-law who is over from the Philippines (he's a software engineer), we changed the settings in Virtual Memory and set up a 2GB area on both the main C: drive (250Gbs of which 130GB is free) and the second internal F: drive (80GBs with 70GB free) - total 4GBs. When we checked, it was set at 1536MB which is way too low when I have 2GBs of system RAM.I ran the same flight out of Sharm-El-Sheikh to Gatwick that I flew on Sunday when the OOM first occured right on the final approach to Gatwick. Again today, it occured almost at the same spot as on Sunday - turning finals into EGKK (Gatwick Xtreme by Gary Summons UK2000).Next thing to do as you say, is to remove (from the scenery library list) all the add-on or non-default scenery and fly the trip again. Hopefully no OOMs this time!Then add the scenery areas back, one by one and watch for the OOM.I'll keep you posted. It may be later in the week until I try it as I have a big public show to attend this weekend.Take care,Lee

Sam,Thanks for your input to this thread...>>Just a reminder: 1)Page File, 2) Physical ram and the 3)Vram/operating system's reserve allocations are 3 EnTireLyseparate system features. Your problem is occurring because ofItem #3. Page file and Physical ram are different things and NoT related to your problem. <>XP and Vista monitor their own use of (item #3) Vram/operatingsystem's reserve allocations and will Shut You Down when ithits the Vram/operating system's reserve allocation 2 gigbarrier. Why? Doesn't sound too bright to me either, but (maybe) our 32 bit system 'founding fathers' never had the faintest idea we would EveR use all 2 gigs of this reserve allocation. In any case, this has Nothing to do with page file or physical ram.<>There is a link in that previous thread to the program used tomonitor this op system reserve allocation level. Run thisprogram and monitor this ram allocation with . . . then without this (or AnY) suspect addon. Take it in steps. Step one: Is this addon causing (or triggering) the problem? <

Hi again Jure,>>I understand what you're saying. It is annoying to have one's flight abruptly terminated like this!<>Same here! I think it's a combination of two or more factors. Clearly, the B-744 is highly complex and my PF is regularly over 1Gb when flying her. But I never had problems before... Anyway, if you wish to check for missing files which could be called over and over again by the sim, download Filemon here: http://www.microsoft.com/technet/sysintern...sk/Filemon.mspxIt is very simple to use and you can easily filter out unwanted data. I pinpointed a missing .fx file like this once.<>Ah! Do you remember Sublogic's Flight simulator for C64 and later for the Amiga? That's what I started flying with! The good ol' days... :)<>But I digress... You're most welcome, Lee! We can move this conversation to e-mail, if you wish, so we don't use the bandwidth here - it clearly isn't PMDG B744's fault, I think that we have>established that much.<< I'm not appotioning blame here. Its a problem that others suffer from, not just me and as a former Forum Moderator in another life, I always found it useful to discuss this sort of thing in the open on the boards where others, particularly lurkers, might find the answer to an issue they are having. I'm sure bandwidth is not an issue with this - if it is and PMDG want me to move this to email I will happily comply with their wishes.I have much respect for PMDG and how it does its business. The quality of its products speaks for itself. I believe, however, that issues found should always be raised in the interests of good communication and customer service and support. Posters here have been very civil about it and most helpful - especially the CEO of PMDG actually taking the time to respond encouragingly - always very welcome and a good sign of a good organisation.I'm starting to find possible ways out of this now between advice obtained here and in the British Airways Virtual members forum so I'm feeling better about it.Thanks for your time sir!kind regards,Lee

Hello Bernie,>>Re new LHR scenery - a version 1.1 was released a few days after the original 1.0 -Are you using the latest version -just a thought!<

Jure,>>if it helps any, I also had my very first OOM just the other day - also coming in to land on the new Simwings LHR. First time it happened in an A-320, yesterday it happened with PMDG B-744 after a looooong flight from SEA. When the OOM occurred, my page file usage according to Task manager was 1.18GB (I have 2GB of RAM). I managed to save the flight & panel state before pressing "OK" to the OOM message - yes, it is possible! I then reloaded the flight and ended it successfully.<< Yes, I use Autosave which will automatically save the whole flight situation for me. But it means a reboot of the PC and reload of the flight and usually I have to re-set LNAV (LNAV has this annoying habit of not intercepting the trackline unless you select HDG SEL and fly away from the track then fly back towards it and re-engage LNAV!). Often to get back to where I was, with the PC reboot and setting up the situation again, takes about 8 minutes. The other thing is that I'm almost always online with VATSIM and about to turn finals - so I simply cannot re-appear in the last position (or anywhere near the airport for that matter!) with ATC and other traffic online (worse than appearing on a runway!) so yes, I end up landing offline mostly to complete the flight .... Spoils the whole thing really. Last nights flight from Sharm-El-Sheikh really chewed me out and I kind of just quit and went down stairs to discuss it with the wife (yeah right ... !)>>I don't want to point a finger at anyone, but it does seem that the OOM could be related to the new LHR scenery and not the B-744. To further confuse matters, I made almost 20 flights into LHR without a glitch. In all sorts of complex aircraft, including some 8-10 flights in the PMDG B-738 and B-739. Go figure... :)<>What to do? I have no clue, for starters I will have Filemon active to see if there's a file missing while flying into LHR.<I'll say again: I have NEVER had an OOM before and I fly almost all complex add-on aircraft into some very dense AI populated areas.<

Hi,>>I've gotten the OOM error with XP Pro, after 4+ hrs of flight, in the 737NG. Some sites tie this to glitches in scenery, which implies it's not aircraft-specific. However, one thing I did try, with (so far) hopeful results, is I abandoned using the VC version of the 737NG. So far, so good. Time will tell.<. Can anyone just add any advice of the best memory or virtual memory configuration I should have? WindowsXP Pro and 2GB of system RAM here.It has been 3 years since I installed FS9 (except for the 9.1 update).Thanks for your imput here - its appreciated.cheers,Lee

Whoops!Jeez, Robert! Never quite expected you to jump in - but my sincere thanks that you have....>>My answer is going to be marvelously unhelpful- and for that Iapologize.... A while back we were getting frantic reports from folks who thought the PMDG 747-400 was creating OOM conditions. After about nine months of searching for answers, we were able tonail down two causes:1) Bad AFCAD implementations in some user scenery. (One was KEWR- but i don't recall the author...) Whenever a complex addon requiring significant system resources (PMDG, LDS, for example) was used going into this place- an OOM would occur. Swapping out the bad AFCAD would eliminate the problem.2) (disclaimer- my recollection here is fuzzy- so if anyone has better data- please add...) Ultimate Scenery V1.0(?) had some areas where something was causing OOM conditions similar to what i described above. There was an update issued- and the problem went away....I offer both of these in case either triggers an "ah-HA!" moment...It has been our experience that OOM errors are caused mostly by scenery implementations gone wrong- or in the case of us poor Vista users- by poor programming of the Windows Vista platform. (I'm currently on Vista- and will likely revert to XP because of the horrible things it does to FSX/FS9...) I'm sorry I can't be more helpful- but keep plugging your cause here- somebody will have an answer for you... I'm certain of that.<

Hello Carl,>The OOM issue has plagued many. The patch results have beenspotty, and enforce the 2 gig limitation. Results with Vista are so varied and inconsistent that MS is offering a roll-back to XP Pro- may I suggest you take advantage of it? I too was running Vista Ultimate, but now run XP Pro and couldn't be happier. My best guess is that DX10, when finally released, will have XP support. I am also giuessing the cessation of OEM XP licensing, scheduled for Jan 08 will not occur.800/900 variant, the 747-400 and the 74F - in that order if I remember rightly. Going to try it this afternoon.>>As far as sim installation, I can tell you that default is always better for performance with FS9 and FSX. Please remember, both are opinions- mine. I am sure there are others! I run FS9 on my PC, wideFS and SB3, with BA ACARS on a wirelessly networked laptop that also masquerades as my Boeing Information Flight-Bag ;).<>It is an honor to have you here with us. I love your signature banner and would like to discuss it with you. My email address is cavaricooper@tampabay.rr.com - please send me an email so we can correspond.<speedbirdonline.co.uk Take care.cheers,Lee

Hi Folks,Firstly, I appreciate the responses of TABs and others who have made suggestions in another thread and my thnaks for that. I also appreciate that the PMDG testers have not been able to re-create this problem with the Queen or the 737.However, I have been a long time customer of PMDG and I have the 737 Full set as well as the 747-400 and Freighter. I will be purchasing the 747-400X for FSX when my new PC system is built early next year when the Vista issues have been sorted out hopefully by the Service Pack that is due and also when the DX10 issue is also solved.Now I have started to have these shutdowns regularly over the last 5 to 6 months and cannot find an answer. I have upgraded my system RAM to 2GB (all matched) and regularly defrag the HDD with Diskeeper. I'm now looking for imformed suggestions as to what I can do to alleviate this issue.I have a second HDD internal 7200rpm drive (80GB) and I have been advised that putting a fresh iinstall of FS9.1 onto that drive and not on the C: drive as it is currently, would help alot with virtual memory and the swap file system. I have an ATI Radion X800XT 256MB card in my PC as well and I have the standard video drivers that came on the CD three years ago (age of the PC) installed. I'm thinking seriously about installing the newer and supposedly better Omega Catalyst 7.4 drivers for my card to try to improve things.Any ideas and comments would be welcomed as to how I could solve this problem.System Specs:-Penium 4, 3.4Ghz CPUAsus Mobo2GB DDR RAMX800XT ATI RadionWD 250GB C: HDD & Seagate 80GB F: HDDWindows XP Pro all updated19" Illyama flat panel monitorDesktop resolution - 1280x1024FS resolution - 1280x1024I fly online mostly with VATSIM - SB3, ActiveSky 6.5 FS9.1 BAV ACARs (in-house flight monitor utility) all running on the one PC.Thanks for listening,kind regards,Lee James

Ady,>>Thank you Lee, that works great. I dont suppose you know of a good 747-400 fuel Planner?<http://www.fsbuild.comWhich can help you plan flights and export the routes directly into the FMC for you and has a good Aircraft Performance file for the PMDG744 which allows it to be more accurate in fuel prediction, especially when used with ActiveSky.Good luck!cheers,Lee

Hello Sam,>Make sure your XP (or Vista) Page File (virtual memorysetting) is set to "System managed size." (Control panel >System> Advanced> Performance> Advanced> Virtual Memory>Change)These OMM CTDs are not about physical ram. The op system andthe program will communicate to determine how much ram theyare forecasting will be needed by that program. This forecast*Not actual ram usage* can go above 2 gig. If it does, youwill get an immediate OOM program shutdown.The second 2 gigs, (above the program's 2 gigs) is used by theop system. Using the 3 gig switch allows the program toforecast into an extra gig of the program's memory forecastingarea. Risky business, if you ask me! Again, this is allallocations and forecasting. This would go on even if you had256Megs on board. This has nothing to do with physical ram.(Although, you really will enjoy an extra gig-O-ram. That'sfor sure. Your machine will feel like a kid again.:)<

Ryan,>>The problem is inherent to running a lot of high resourceintensive addons in conjunction with *some* systemconfigurations - it's not specifically related to the 744. We've had people who get the OOM errors do a ton of testing onthis and it reproduces with other high end addons like theLDS767, PSS777 and so on too - it's definitely not a problemin our aircraft itself. FS9 default aircraft have almost zeromemory and CPU overhead in comparison to our stuff.None of us on the PMDG dev team have ever seen the OOM error,so it's very hard for us to even attempt to do anything aboutit because we can't see it happen in our debuggers. The factthat it only happens to a small number of people thoughindicates a localized issue or a conflict with particularcombinations of addons, not a generic flaw in the 744's code.The only thing I can really suggest is to try adding anotherGB of RAM - most people are using 2GB and I think it's theoptimal configuration for FS9.<) so maybe I'll bite the bullet and re-install FS onto the new 80GB drive I now have (my C: drive is 250GB). Currently, the thinking seems to be that 2GB of RAM would not really help since FS9 is still both CPU and Graphics Memory intensive with RAM being only a small part of the equation.I use DiskKeeper to keep the C: and F: drives (hard disks) defragmented but the problem occurs randomly, anywhere from four to eleven hours during flight - but it happens a lot close to landing approach when very near to airports. I do a lot of rebooting FS and landing offline (don't want to screw up the controller's management of aircraft or other people's landings). Strangely enough this has never happened with the 737NG.I'm wondering if a re-install of the PMDG "set" would be in order? (737 then the 744 then the Freighter?) I'm kind of poking at straws here. Anyway, appreciate you taking the time to answer my comments.Take care,regards,Lee

Hello Ady,>>Everytime I set my fuel loadout for the 747-400, it changeswhen I enter the sim? e.g Fuel Tanks at 50% then for some reason after loading into FS9 the Fuel Quantity has changed?<

Hi,I have also just got LHR2008 version 1.1 from Aerosoft (the latest version) and I also get the out-of-memory error.I should mention that this problem is inherent in the Queen, not the Aerosoft scenery of LHR. I did several test flights today with default FS9 aircraft and the Queen and the OOM error only occurs when flying the Queen - and it occurs with other scenery as well, not just the Aerosoft product. I had no errors at all using default aircraft over LHR2008.That said, I have had the Queen since it was released and have flown hours and hours in it. I also have the Freighter and the 737 full set from the -600 up to the -800/900 product. The Queen is a wonderful product and flies really well especially at high weights.However, my OOM issues are now getting worse and to the point where I'm really looking for a solution. I read about the 3GB fix in the BOOT.INI file and for me using this option on startup produces a failure to start Windows due to a corrupt file in Windows Root (file is referred to as HAD.DLL - the file is not corrupt) and so I cannot boot into the 3GB configuration.Now I'm seriously looking for answers to this. I love to fly the Queen (its my virtual job for goodness sake!) but now the problem is so bad I need a solution.If anyone has any good ideas I'd like to hear them. My system is a Pentium 4, 3.4GHZ CPU, 1GB DDR RAM, 256MB ATI Radion X800XT card, fast hard disk (250GB) Windows XP Pro SP2 all up to date, Illyama 19" monitor. Windows desktop is 1280x1024 and FS is set to the same 1280x1024 resolution. I always fly in Windowed mode. OOMs usually occur after hours of flying, close to the arrival airport or near the landing approach (which leads me to believe it is scenery conflicts that may be part of the problem) although it has happened at 39000 feet after some 7 hours of flying.Going back to the Heathrow scenery, I find it very steady at 16-19 fps mostly although I am having stuttering on the approach to 27R this afternoon which disappears after landing and taxi-ing.Take care - thanks for listening,cheers,Lee