“When you’re using Linux with the GNOME UI, don’t you hate it when you have to go into the terminal or add the force quit button to the panel just so you can exit an unresponsive program?” asks Thomas over on the Linux Mint community forum.
You’ll find his full run down over @ http://community.linuxmint.com/tutorial/view/30 where you should also leave him some love for this simple but oh-so-nifty tip.
In the words of a popular Meerkat here in Blighty: Simples.