From Bugzilla Helper:
User-Agent: Mozilla/5.0 Galeon/1.2.5 (X11; Linux i686; U;) Gecko/20020625
Description of problem:
When attempting to reboot the system from the logout screen, the system simply
goes back to the GDM window. Requesting a reboot or shutdown works from there.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
Select "Log out" from the GNOME menu.
Select the reboot option.
Actual Results: System returns to the GDM display.
Expected Results: System should reboot.
*** This bug has been marked as a duplicate of 68100 ***