Comment 25 for bug 750386

Apparently this is still happening to many people (including myself) and I'm getting pings and emails about the work-around that I've discovered. This is the script that I use. Don't trust me... research this yourself.

1) I login at lightdm and verify that launching anything from Unity causes a hang/crash/freeze.
2) I control-alt 1 to a console terminal and login
3) I run this script (replace "<me>" with your login name. I've called it "fixcompiz.sh"

#!/bin/sh
sudo service lightdm stop
rm -rf /home/me/.compiz*
rm -rf /home/me/.cache/.compiz*
sudo service lightdm start

4) when lightdm starts it forces me over to console 7 where I can just login and continue on my happy way with a working system.

I have to perform the above 4 steps on my two nvidia machines on every boot.