[X4U] "Shutdown" when other Users are active won't work

[Michael Elliott]

Sometimes I want to shut down the computer, and don't want to go to the 
trouble of logging into my wife's account, logging her out, re-logging 
into my own account, and then shutting down.

OSX provides a mechanism--supposedly--for this:  if I select Shut Down 
from the Apple menu, it warns me that the other user is logged in, and 
that I need to enter an administrator's name and password, and that all 
data will be lost in any opened & unsaved documents.  I do this....and 
nothing happens.  I've waited many minutes before, even left my 
computer for a while, and when I return...nothing.

Is anyone ELSE able to make this work?

Michael