On Tue, 2010-02-02 at 18:30 -0500, Robert Heller wrote:
I believe the shutdown command automagically generates warning. I would *guess* that GNOME would have some applet that monitors these sorts of warnings and creates popups.
I haven't seen one, unless the user happens to have a gnome-terminal window open, in which case a warning appears in that terminal. Otherwise, not.