nbody on CUDA 2.0 Beta

The nbody simulation from the SDK seems to frequently lock up during run-time after upgrading to cuda 2.0 beta (driver, toolkit and sdk) and recompilation. This wasn’t an issue before the upgrade nor was it while running an older version of the executable compiled from cuda 1.1 after installing the newer drivers. Is anyone else having this issue?

nvidia 8800 gtx, winXP

Edit: Scratch that: The problem was a faulty display driver update