Sorry about that! I found the missing graphic and uploaded it. That happened with something else too. I think the upgrade didnt go so smoothly for people with modified boards like ours so we've had to make small changes here and there to make sure the upgrade was in place.
That icone allows you to modify your post right in the page. Enjoy
If you see anything else please dont hesitate to let us know. That was only appearing as a problem in IE and I don't use IE and forgot to test it (oops) =)