No problem here with stock kernel 2.6.30-1-amd64 and nvidia prop driver ii libc6 2.9-26 GNU C Library: Shared libraries ii nvidia-glx 185.18.36-2 NVIDIA binary Xorg driver ii nvidia-glx-ia32 185.18.36-2 NVIDIA binary driver 32bit libs ii xserver-xorg 1:7.4+4 the X.Org X server