Comment 3 for bug 603330

I also have this exact bug.

What happens is the user chooses logoff
before going back to gdm two pop-ups appear (not every time)
ICE socket could not be created
then you click the two dialogs away
gdm starts
you try to log back into the same user session
you get a blank purple page and you can move the mouse around (no desktop at all)

You have to do a cold restart of the machine in order to get the desktop to work again!

this is actually quite serious as end users are having to do the 4 second power button restart in order to get their computer working again.