I installed 12.04 Precise Pangolin, but I checked gdm instead of lightdm at installation, and made a typo in the name I chose for my computer. I only noticed the typo when I was using a terminal window.
Because of gdm and compiz Ubuntu Tweak cannot reset my login screen.
I would dearly like to change my computer name. I am sure this is possible, but do not know how. Help!