does it happen in other games?
I don't play other games.
when did it start doing it?
A day or two ago. I had the problem in the past with an old version of the game (didn't have the CD). With the installed version from the CD, it just started happening.
what's your cards temp?
Don't know (how do I check?). I have an ATI Radeon X800 with the latest drivers. I'm using Direct 3D for the video driver, but it happens with OpenGL, too.