Possible Duplicate:
What should I do when Ubuntu freezes?
How do I reset GNOME to the defaults?
Upgrade from 11.04 to 11.10 failed. Reinstalled 11.10 without formatting. Appears that config files in /home are breaking Unity (because it runs fine from a live CD). Cannot run 'unity --reset' as the graphics corrupt, the mouse freezes and it appears the keyboard is frozen as well. How can I repair this from recovery mode?