One of the guys I work with has gotten it verified by the guys at punkbuster that the new nVidia detonator drivers (52.16) may in some cases cause conflicts with Punkbuster that will cause the system to hard freeze during gameplay. They currently do not understand the nature of this problem and don’t have an ETA for the fix.
If you are experiencing this problem, it is reccomended that you roll back your nVidia drivers to a previous version.

