Originally Posted by Myrthos 
I've updated the forum software less than 24 hours ago, maybe it is related.
I've tried it on the front page and had no issues, it worked. I'm using Firefox 3.6.3. Will try on other browser as well.
No need, I fixed this 5 minutes before your post, was just finishing up the rest.

There were some security related template changes that had to be updated in our custom styles. Anyway, everything should be fine now. Thanks for the report!