fyi... Not sure if this is a known or not, but I was having issues again today... sometime after lunch (central time). The main site worked, but the /forums/ url gave a 404. DNS seemed ok (or at least seems consistent with what it is now, which is 208.73.210.204 -- I can't say that I know what it is supposed to be). I have access to a ridiculous number of DNS servers and they all resolved to that.
I'm clueless as to how CDNs work... so I have no idea if that's the factor. If it matters, this is Linux/Firefox 19. But the same client works fine now. (I was going to proxy it through a tunnel to home when it was broken... but got sidetracked with "work", damn them.)