It's probably a load balanced site, and one of the back end machines might be down, or the load balancer itself might be down (and giving it www2.etc.etc lets it bypass the load balancer completely). Also, if you reject cookies, you'll get some load balancing failures that you wouldn't if you didn't.
no subject
Date: 2002-01-18 01:35 am (UTC)John - knows little, tells all