Originally Posted by slinger 
On Vista 64 Ultimate here with a Inno3D 8800GT and no problems at all. Have run a full benchmark of 3DM06 (scored 10115 at stock) and have been playing QW:Enemy Territory, UT3 and Crysis with no problems at all. Drivers Im using are 169.04 beta
After reading this, I think it might be that particular brand of the card, perhaps....Maybe the new drivers will solve the problem.