When i try to log in, the screen goes black for a couple of seconds and then comes back to the login page. If I deliberately type in an incorrect password a red error message appears, so i assume my password is correct. (During boot a line of red text appears below the Ubuntu 12.04 for a split second. it is gone too fast for me to read. Don't know if that is relevant.)
Any thoughts on how i can get in? It lets me log in as a guest, but of course I can't access my folders or documents as a guest. Or can I?
P.S. Shut down worked for the first time!