Can't shutdown or logout

[Liam Proven]

Anyone met this one?

My laptop is functioning perfectly, with a desktop spread across its
internal & an external monitor. (Mint 9, which is to say, Ubuntu
10.04. Suspend or hibernate and resume doesn't work but I can live
with that.)

The only snag is, it completely ignores me when I try to log out or
shut down. Nothing happens, no error, zero.

Any pointers at where to look for more info? Does the GNOME shell log
stuff like this anywhere I can look at?

-- 
Liam Proven • Profile: http://www.linkedin.com/in/liamproven
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