I flew something like 200 hours on FSX SP1 and it never crashed that's great simulation. Since I installed Acceleration, after a while flying, I start having weird graphics. The screen freeze and I can still hear the sound of the plane.. then sometimes it recover, or crash to desktop. I cannot complete a mission before it freeze! This is an unfinished add-on, we are BETA-TESTERS. I have uninstalled Acceleration. MS said this Acceleration/SP2 is going to be free later: I hope they make us a patch before!!Eric St-PierreIntel Core2-3GHz-4GO mem8800 GTS-640Mo

It looks as if quite a few Simmers are having a fit with this newest nightmare from MS.If anyone isn't, please advise us.Capt. Dad

I'm having the same problems. Having un-installed Acceleration I installed the free SP2 yesterday and am getting the same freezes and abends so I guess the bugs are in the service pack not all the other stuff you get in Acceleration. In the bin it all goes. I'll be sure to write a review over at Amazon...