Possible Duplicate:
Unity doesn't load, no Launcher, no Dash appears
I've just upgraded from 10.04 -> 10.10 -> 11.04 and after the reboot, I'm presented with my desktop wallpaper, a mouse cursor.... and that's it!
I was able to get to firefox, but only by hitting the power button, clicking Help, and then selecting "Get help online".
Alt-F2 doesn't show the run dialog, so I'm unable to get to a terminal or anything!
Any ideas or help?
update : I was able to boot in recovery mode and started the root terminal with network access. apt-get remove ubuntu-desktop && apt-get ubuntu-desktop did not change anything