Preventing users from logging off administrators in Vista?

> Hey everyone! I've got what would seem to be a really simply question
> here,
> but after a little searching, I'm not so sure anymore. There is this
> strange
> "feature" in Windows Vista which allows administrators to be logged onto a
> computer and have the workstation locked, yet still be logged off by
> anybody,
> even without any other accounts active. All that needs to be done is
> click
> on "switch users" and then anyone can restart the computer, turn it off,
> put
> it in standby and so on, and all this is without even having logged into
> any
> given account. Unfortunately, this means an administrator who left tasks
> running in the background, locked the workstation and walked away could
> technically have all of his applications closed and the system rebooted by
> literally anybody who can touch the mouse. Surely there must be a way of
> changing this behavior? Thanks for any help and your thoughts on this!

> Thanks, that just led me on the right track! The fix for this was actually
> relatively simple. All that needed to be done was to remove the button from
> the login screen. The procedure is as follows:
>
> Windows Key + R (for Run) and type "gpedit.msc" (without quotes). Go to
> Computer Configuration > Administrative Templates > System > Logon > Hide
> entry points for Fast User Switching > Enabled > OK
>
> After that, all is well and the switch user button is not available as would
> be expected for a single-account computer. Thanks for your reply and
> hopefully this can someday help somebody else as well!