Comment 87 for bug 439448

Today the shut-down button became unusable because of this problem - this makes it really hard for
inexperienced users to shut down their computers.
This smells like a major usability problem and should be taken serious.

I believe that at least the following could/should be done, as long as this bug exists:
Put the options for logout/shut-down back to the System menu.

Although this would not fix the underlying issue, at least this would enable inexperienced users to come back to normal by a logout/login sequence or a restart.