Our host is currently suffering from a DDoS attack and is working to resolve the problem. In the meantime, the site may be a bit unstable. I'm told that the network guys are all over this but it seems like a pretty serious attack so I don't have any ETA.
Edit: Things seem to be working ok now. There is still some packet loss issues with our site, but I don't think most people will notice. It should be totally resolved pretty soon.
Sorry about all this.