I cannot log in to a particular user's account in X after upgrade to 13.04. The password is accepted, the screen goes blank but rather than getting the desktop I am quickly returned to the login screen.
I can log in as that user if I go to a text console using Ctrl+Alt+F1.
I can log in as other users in X.
I have switched to gdm but the results are the same. I have also installed gnome-shell and xfce and but cannot log in to them either.
Where should I look to troubleshoot this problem?