I am having a pretty good FSX experience overall on my new Mac Pro with the 8800GT video card. One problem however is that I'm forced to exit and restart FSX for each new flight. If I do a flight, then end it, and try then to start another I get the 'Loading Terrain Data' message (as usual) but at about 30-40% loaded the program just hangs and the only way out is Ctrl/Alt/Del to Task Manager then End Task. The same thing happens when I change aircraft or location mid flight too. Other than this, it all works fine. By the way I have SP1 loaded but no other addons at all. It's a clean install. Anyone else experiencing this?