cannot move old log file

It seems that chmod +s can make a difference on non root user login in BT3

rumy~$ startx
xauth: creating new authority file /home/rumy/.serverauth.2965

Fatal server error:
Cannot move old log file (“var/log/Xorg.0.log” to “/var/log.Xorg.0.log.old”

This will fix the error above ;)

$ su

# chmod +s /usr/bin/X11/Xorg