Disable "grayout" effect on GNOME logout

[Toralf Lund]

Is there any way I can disable the "grayout" when the "Log out" is 
selected in a GNOME selected? You know, the way the whole desktop is 
displayed with a "grayed out" or "disabled" effect while the logout 
confirmation popup is displayed?

I'm trying to run a GNOME session via a remote X server (as I've 
mentioned earlier), and find that logout is annoyingly slow due to this 
(actually) quite graphically intensive effect.

- Toralf