If you were getting a "Page Not Found" response earlier today, that was because I seem to have jacked up some server settings when I was tinkering with them last night.  Me doing that is sort of like Tom DeLay dancing — just because I have managed to do it before without hurting anything does not mean anybody really wants to see me do it again.  Anyway, I believe this is fixed now, and that over the next few hours the site should be back online for everyone.  Thanks.