Do not upgrade to nvidia 196.75 driver - could fry your card

[Pradeep]

Engadget are reporting that nVidia's 196.75 driver update might or might not kill your card during gaming - a bug in the fan controller code may exist which will cause it to overheat.

http://www.engadget.com/2010/03/05/nvidia-pulls-196-75-driver-amid-reports-its-frying-graphics-car/