I noticed this today, test it out with other screens opened (like LFS news,...) and the chatterbox icon keeps displayed through the openeed windows. Closing LFSW and re-opening doesn't help either. Replacing the icon didn't work also, it kept 'shinning' through everything.
Any suggestions ?

http://sccabco.free.fr/up/chat.JPG

hmm, just so I understand your problem better; you reload the page and you do not touch the chatterbox icon at all and it then looks like in your screenshot?

Bit late, forgot about it

Yes, reload the page and it's just like in the screenshot, not clicking anything. And I also noticed my icons have changed to a random order (like in cropsy's topic about that).
If I move the "racers & hosts online" screen away from it, it keeps being shown on the front, even if I close every window and re-open e.g S2 Hotlaps, if it appears above the Chatterbox icon I get again the same as in the screenie. Also by closing and re-opening my browser and LFSW it's like that, but not everytime. Just now and then.