Comment 8 for bug 146536

Whatever you guys do, don't run a dist-upgrade through aptitude.

It showed 4 unresolved dependencies. To 'fix' the first one, the 'ubuntu-desktop' metapackage has to be removed, as well as a couple others. Run dist-upgrade again, it wants to remove pidgin, udev, etc.. run it again, and it wants to remove over 500 packages on the system, including everything xorg and gnome-related in any way.