Defragging has been done Saturday, so this isn't the problem. I will try a flight with the scenery disabled, and be back here. Can take a few days, as I have to work today and tomorrow and there is very little time left tot fly. (working is fun, but it shouldn't take such a large ammount of freetime :( )I hope I can give it a try today before I go of for working.And btw, thanks for your reply(s)