Howto Enable Ctrl+Alt+Backspace On Ubuntu Jaunty

At Ubuntu Jaunty and probably at the future releases, DontZap option a.k.a. Ctrl+Alt+Backspace shortcut, which restarts X-Server, is disabled default.It is disabled default because a number of users have complained about accidentally restarting their X-Server.(The reason is taken from Official Release Notes.WTF?How can a user accidentally push those buttons? Google > Where can i sell my pc at?).You can re-enable it by following this howto :

Edit your xorg.conf file :

$sudo gedit /etc/X11/xorg.conf

And add this at the end of your xorg.conf :

Section "ServerFlags"
Option "DontZap" "false"
EndSection

Now reboot your computer or logout.

PS : You can disable it by replacing false with true OR removing those lines.