I have wrestled with this for many months, and I always go back to kdm for the login manager.
But, gdm does do user switching, so I don't know why pacman would have replaced it with a user-switcher.....???
For starters, please post the content of /etc/inittab and (if it exists) ~/.xinitrc
Last edited by pixellany; 10-20-2009 at 08:03 AM.