After upgrading from Ubuntu 11.10 to 12.04, when I log in, everything is ruined. It's all black, blank white icons, blank black icons on the start menu, and well, nothing works. If I open up Chromium, it looks as though it's in high contrast mode.
Is this a bug? Any ideas what could have happened? Can I get 11.10 back?
Some photos (can't connect to network in Ubuntu so I had to take pictures with phone):