Let's see, I cannot log in in Lubuntu 12.04. On the shell I get when typing startx:

  _XSERVTransSocketUNIXCreateListener: ...SocketCreateListener()  failed

  _XSERVTransMakeA11C0TSServerListeners: server already running



  Fatal server error:

  Cannot establich any listening sockets - Make sure an X server isn't already running



 ...

 Please also check the log file at "/var/log/Xorg.0.log" for additional information.  

 ddxSigGiveUp: Closing log

 Server terminated with error (1). CLosing log file



 Invalid MIT-MAGIC-COOKIE-1 keyInvalid MIT-MAGIC-COOKIE-1 keyxinit: giving up

 xinit: unable to connect to X server: Resource temporarily unavailable

 xinit: server error  

Before I had only read-right on the file-system with sudo autoremove I got my write-rights back. I removed the .Xauthority* files in /home/username. Still cannot login back