If you're running Vista and have a high-end NVIDIA based graphics card, you'll be glad to know Microsoft have just released a hotfix which resolves potential Graphics Virtual Address problems which can randomly occur in 3D applications (ie. games), not only this but it is said to deal with very poor framerates when very high detail settings are used in several popular gaming titles of today.
This hotfix is specific to GeForce owners so all you ATI folks need not apply. I should also mention that the hotfix isn't made effective unless you are running the latest ForceWare Release 163 drivers too.
Microsoft has made available the following Windows Vista KB940105 hotfix. All NVIDIA GeForce 6, 7 and 8 series users should install this update in order to resolve potential Graphics Virtual Address problems that may occur when running Windows Vista OS. This hotfix resolves abnormal application behavior such as crashes and extremely low frame rates when running some 3D applications at very high graphics settings.