GTX480 256 vs 260 driver

Ok i was wondering if anyone else noticed that some of the animations for ntw became a little more jumpy/staggered with use of the current newest non beta driver the 256 driver?? If so have any then tried the beta that came out a few days ago the 260 driver??(which still is a beta)

Has it had any ill effects and well has it returned the animations to there previous smooth nature?? i am not sure if i am going to roll back to the previous driver that worked perfectly for ntw or move to the beta thought i would ask first for any ideas opinions.

Disregard and close i have discovered it was not my driver at all but my physx and 3d surround display settings causing the problem

Closed on request.