Please see the screenshot. This ad on the left hand side is intruding on the ability to give mouse focus to the chat applet. And thus the whole ability to chat is impossible. This was verified in Chrome 12.0.742.60 on Linux (don't ask the distro, its not one!), Firefox 3.6.17. There are enough ads on the site, if anything there should be fewer...
I'm sure the shot will be more than enough to help you debug
Guess I should've read which tags were supported here :)
Thanks, works great now