I almost don't want to post this, seeing as the site has been up and down like a yo-yo over the past few days as Blink works tirelessly to squash every bug, and I don't want to make him cry but..
All non-forum pages look like that in IE7. In IE7, the error page works fine, but the formatting is screwed up like that.
In Firefox 2.0.0.7 everything looks fine, but the error page is broken, as you can see.