I don’t like Ubuntu’s default shutdown menu. (You know, the one that appears when you press System → Quit and pops up a dialog with buttons for each option.)
GNOME, by default, doesn’t actually have the “Quit” menu. Instead, it has “Log Out username” and “Shut Down”. Those menus bring up dialogs that have a timer, so if you don’t click Shut Down/Log Out or Cancel in the resulting dialog, it will go ahead and shut down anyway.
Handy for if you click System → Shut Down when you’re in a rush to get out of the house, and forget about the dialog that comes up, because you ran off before it came up.
It’s really easy to enable. Just type this in a terminal:
$ gconftool-2 --type bool --set /apps/panel/global/upstream_session true
Either type killall gnome-panel, or log out and log on to see the changes.
