[Solved] Keyboard Shortcuts not working on Ubuntu 11.04
I was playing with CompizConfig Settings Manager, and all of a sudden, my keyboard shortcuts stopped working. I scratched my head for an hour and then I found this solution. Accidentally, I had uncheked “Gnome Compatibility” on CompizConfig Settings Manager. When checked, it keeps Compiz compatible with Gnome Desktop Environment. So keeping it checked solved my problem.

After installing compizconfig setting manager my some keyboard shortcut are not working like moving workspace 1 to workspace 2 or 3 or 4
ya same problem with my Ubuntu too. trying to solving it.
Bored of using compiz now.. Else, it used to be on the top list of packages after a fresh install of ubuntu.