We had a problem with some of the forum software getting corrupted over the weekend. Sometime Sunday specifically. We are aware of it, and bamajim has located the problems (there are about 30 files that were damaged) and is fixing it. Your avatar doesn't work either. The files, and the functions they controlled, that were corrupted weren't forum critical, so the underlying data is all safe and backed up on other servers as well. We are sorry for the problem, and it should be all fixed in a day or so.