Problems with switchdesk in F10

[Joachim Backes]

Trying in GNOME to logout and then clicking the button "switch user" 
produces an error popup:

---------------------------------------------------------------------------
Unable to start new display

The name org.gnome.DisplayManager was not provided by any .service files
-------------------------------------------------------------------------

Installed: gnome-screensaver-2.24.1-2.fc10.i386

Any solution?

Regards

Joachim Backes <joachim.backes at rhrk.uni-kl.de>

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