Can't logout of kde 4.8

[freeslkr]

I can't logout/restart/shut down from a KDE session.  Nothing happens.  I'm on
Fedora 16 with the kde48 repo enabled.  I've tried it running kdm and gdm.  I
can logout of a GNOME session running either display manager.  I've recently
upgraded from Fedora 14, and this hasn't worked since the upgrade.  I can
suspend and switch user. Is anyone else having this problem, or does anyone have
ideas?

Thank you.