I upgraded from Ubuntu 10.04 to 12.04 and it went fine. After restart, when I try to log in from my root user it shows a command screen in a split second and then returns back to the log in screen which shows all users. I have even tried to test logging in with other users and it is working fine.
I guess there is some problem with home folder of my user or something. Kindly help me out otherwise my only hope is to make a fresh install from a CD which I am avoiding.
Thanks in advance.