Front-end logout hook

Hi All,

Ok, so I’ve had a brief look around and searched the forum, and no-one seems to have answered this. My question is;

Is there an available hook which allows me to call an extension when the user logs-out from the front end?

There are some things in my extensions which I need to reset when a user logs out.

Equally open to hacks if it can’t be done with a hook, but would rather do it the proper way.

Thanks in advance.