I was running the Advanced Tutorial yesterday and about 1hr into the flight FSX froze. I could still hear sounds but no keys would work - I had to do ctrl-alt-del and terminate FSX which was listed as not responding. This the first time I have had a problem with MD-11/FSX, having flown Tutorial 1 several times previously w/no issue. There was one change to FSX which I implemented prior to running the Advanced Tutorial: I installed Ultimate Terrain X - USA. Here is my system spec:Dell Studio XPS8100 SX8100-1986NBCi7-860 2.8GHz 8MB cace8GB DDR3 RAM1TB ATA HD (7200 rpm)ATI Radeon HD5770 1GB VideoWindows 7 Premium 64-bitRunning FSX w/SP1 and SP2 installedMD-11Ultimate Terrain X - USAAnyone experienced problems w/Ultimate Terrain X - USA? I have graphics settings set to high for the most part and get good framerates. Thanks for the help - Eli Mansour

Check the trouble logs provided by your OS. Maybe there is a clue there.

If this was a one time thing, I wouldn't worry too much about it, but just to be safe:

• Make sure you have your screensaver disabled
• Before starting FSX, do a fresh reboot and don't start anything except 1st your tutorial pdf (if not printed and you are running in windowed mode to read it).
  • Let windows fully load and come to idle, make sure you right click any uneeded programs that start near your system clock and shut them off, ie virus scammer, cd writer software, gamespy, etc...

  [*]Don't run firefox, or IE prior to or during.

Most of these are mainly because doing the 1st tutorial you probably had about 30 second intervals at best between actually doing something in FSX and there wasn't room for memory leak or memory allocation issues. The Advanced tutorial on the other hand may have you away from it longer with more like 5 minute intervals. If you have other things running and FSX just sitting in the background doing nothing, it can sometimes forget where it was. I swear sometimes that FSX memory is like Alzheimers. I can leave it on at times for a couple days with no issue, and more often than not just an over night will cause some sort of memory glitches.Even with nice specs like your's it still may be coming down to some of the weird nuances from this aging product and unfixed bugs.As Dan said, check your event logs and see what the faulting module was. It may just say FSX.exe which is pretty useless, but it may say something less obvious or something that may have got corrupt.