Is someone messing with a system css or xsl page? Yesterday, I came onto the site, and after a few minutes, the coffeehouse messed up. The normal banners weren't working; all possible extended links in the dropdown segment up top were showing, and as far as I can tell all stylistic formatting was lost. The on-hover descriptions appeared to have gone bold, in some font that looks almost like a 16point or 18point size. It only affected the coffeehouse; other branches of the forum looked normal. The situation was somehow resolved after a few hours.
And it just happened to me again. I haven't checked any other forum branches out, but the Geek's Lounge and Feedback forums have gone screwy again.
I'm running Firefox, 18.104.22.168, if that helps any.
Edit: Checked out the Perl, PHP, and Pascal/Delphi forums; they're looking normal.