I've got a wee little annoying problem, it's do to with the inbox.

I cleaned the cache and cookies, closed and restarted my browser (i'm
using ubuntu 8.04.2, all patches applied, latest updates, using the
latest version of Firefox) and signed in again.

Still, the inbox is saying "1" in Personal Messages, meaning a new
message, but it's never shown because ALL messages are answered.

I need a way to reset the counter, it's bugging the shit outta me :/