Originally Posted by brucecadieux
You have according to that page you posted three different nvidia drivers installed.
nvidia-current, 256.35, 2.6.35-13-generic, x86_64: installed
nvidia-current, 256.35, 2.6.32-24-generic, x86_64: installed
nvidia-173, 173.14.27, 2.6.35-13-generic, x86_64: installed
In the meanwhile I removed the extra kernels and the 173 driver (which was not activated) and upgraded to 256.44 (as noted in the bug comments). The problems are still there.