Comment 46 for bug 963633

The Shortcuts seemed to be working so I started a Terminal with STRG+ALT+T and typed in "compiz --reset" and "unity --reset" and then reloged.

Now everything is back to normal. However these needed reset steps should be done automatically during package install imo.
When the final version of ubuntu is out and people still experience these issues which can only be solved by typing in a terminal they probably will like ubuntu less when they are non-techi users...