the bug still exists but this thread http://ubuntuforums.org/showthread.php?p=9203854 gives a solution. It seems the bug comes from the login manager kdm. Switching to gdm allows logout and shutdown.
the bug still exists but this thread ubuntuforums. org/showthread. php?p=9203854
http://
gives a solution.
It seems the bug comes from the login manager kdm.
Switching to gdm allows logout and shutdown.