Logout applet - warning

[NoOp]

Anyone know if it is possible to have the logout/shutdown etc applet
issue a warning before actually acting on the selected action?

Example: user clicks the applet which brings up: Shutdown, Restart,
Logout choices - user click the Shutdown button & the machine
immediately shuts down (as expected).

Problem: sometimes the user (often times me :-) is in a hurry and clicks
 Shutdown inststead of Restart or some other intended button. Ubuntu is
so efficient that it immediately does as asked and shutsdown the machine.

Is it possible to issue some sort of warning similar to that issued when
changing screen resolution, ala;

You've requested that this machine Shutdown (or Restart). This machine
will <shutdown or restart> in x seconds, press Accept to confirm or
Cancel to cancel the request.