I tried changing my username on my Arch Linux install but somewhat caused a problem. I did the usual usermod -l newlogin oldlogin and renamed my HOME directory. I followed the instructions from this page. I tried logging in with the new username but for some reason, it wasn't logging me in. I was not able to spot any "useful information" in the logs - auth.log and user.log. Someone advised me to login from the root shell by calling the command login. This then gave me the error message. I obviously didn't change my HOME directory correctly as it was pointing to /home/old_login and goes t...