Same problem for me:
My computer : Nvidia Integrated 6100, Processor AMD64, Ubuntu 11.04 32, Unity, 1 go RAM.
00:05.0 VGA compatible controller: nVidia Corporation C51G [GeForce 6100] (rev a2)
Same problem for me:
My computer : Nvidia Integrated 6100, Processor AMD64, Ubuntu 11.04 32, Unity, 1 go RAM.
00:05.0 VGA compatible controller: nVidia Corporation C51G [GeForce 6100] (rev a2)