We see that the site is down. There's a problem with the main Stanford web server and the University IT is working on it. Note that this only affects our web site, the stats, main servers, AS, data servers, etc are all up (FAH is up).
UPDATE from Stanford IT:
At the moment we're having problems with certain AFS directories that are affecting the WWW servers. I'm not sure when things will come back up yet, but I'll mail you to mention when things are better. I'm very sorry about the inconvenience — we're working hard on tracking this down.
It's been our experience that the web/AFS team is very strong, so hopefully they will have this resolved soon (eg by the end of business today).
UPDATE: This appears to now be fixed.