NVIDIA's recently released GeForce 196.75 WHQL drivers are causing problems with some users reporting "intermittent low FPS", in the words of Blizzard's technical staff. It notes that the drivers have a bug in its fan-speed control that causes graphics cards to overheat when running applications such as Warcraft 3, World of Warcraft and StarCraft 2 Beta. Not only does bad fan control result in bad application performance, but can also damage the graphics accelerator. Blizzard on its part advised users to revert to older versions of the GeForce driver. Version 196.21 (older WHQL-signed driver) can be downloaded from here.

Update (3/5): NVIDIA has withdrawn the 196.75 WHQL drivers from its website. The company is working to resolve this issue.

Source: inc gamers