It's always something. I left the MacBook in the office last night, so I didn't notice that the site went offline around 10:22 last night. I noticed this morning, but I didn't know quite enough about Apache settings to totally resolve the entire issue myself.
The server crashed, so most things came back with a restart. I got the public store back up, and the Wiki - but a CGI relay security issue was blocking access to the blogs and the main site. Thanks to one our engineers (thanks pete!) things are back to normal.