Comment 4 for bug 991001

Another clues:
 - installation of nvidia-current 295.33 (https://launchpadlibrarian.net/98943873/nvidia-current_295.33-0ubuntu1_amd64.deb) is successfull, but the problem with no 3D acceleration remains.
 - booting time and kdm start from rc when nvidia driver in use is very slow compared to nouveau.