[expert] Cannot login as normal user through GUI

[Chunnuan Chen]

Hi,
I backed up the files under /etc/X11 and /usr/X11R6/ in order to install
the new XFree86 4.0. After failing to configure the new x server to
support the neomagic video card in my labtop, I copied the files back to
/etc/X11 and /usr/X11R6. Now  I   cannot login as regular through the GUI,
even though I can do so through the console.  Only root can login through
GUI. What are the files related to the GUI login process?
Thanks,
Chunnuan