I had a really strange drop from game to desktop after I installed the game. I cannot give you the exact error message because a) it would be in Finnish, had to translate myself and Never been able to get the same error again.
I have:
Windows Vista Home Premium
Intel C2D 6550, 2.33 Ghz
2MB Ram
Nvidia 8600 GTS
When I first time ran the game it worked perfectly. Good FPS even when relatively big map with lots of buildings (I played quick battle). I played the game for about 15 mins. After that the game crashed to desktop and the Windows message was in english something like: "Your graphic card had to be shut down. Windows will now restart your graphics card.". After that it ran very lousy with appalling framerates. Even after reboot. Absolutely no problems with any other games. Tried to re-install CMSF and Nvidia drivers but no change. Really strange...
Edit: typos