Gary Simmons, aka Battle Cat, sends word that bungie.org is moving, and there will be a bit of downtime:

You may have noticed that none of our DNS names are working anymore. We are in the middle of the mother of all moves, and we may be down for a few days. This is temporary, and due to mitigating circumstances unavoidable, so please bear with us. Bungie.org is completely dedicated to providing Bungie Software gaming enthusiasts with what they need most, access to information and files relating to their favorite Bungie game. Make no mistake about that. For now you can log on to Oni or the Bungie.org hotline by using the IP 24.4.104.213 and as always the Marathon story page can be reached at http://smd033.smd.tcd.ie/ or http://www.Marathon.org/story/

Should be back up in a few days, or sooner... keep an eye open for them.