I guess this is a related topic...I've had trouble logging out of PC period! The screen will turn a shade of gray when I say "Log Out", THEN the dialog that pops up asking "are you sure?" and "yes" or "no" will disappear before I have a chance to respond. I mean it goes away in less than a second!

Then, sometimes it will log me out, sometimes no (if I manage to react in time!). Weird....

It doesn't happen all the time though...One of those things!