Hi just did fresh install of 12.04. rsynced my /home to new partition prior to install. All went fine but I cannot log in with my user account. Am able to log in as Guest. Any ideas?
First of all, you can try to reset Unity and/or Compiz. There are useful instructions available here: http://www.webupd8.org/2011/04/how-to-reset-unity-launcher-icons-or.html
Another option is to try moving all the contents of you home folder somewhere else. You should be able to login with a "blank" used account. Then try to move things back to your home folder, one directory at a time. This should allow you to figure out what file/directory is causing problems.