Last Friday morning, sometime after 3:30am, my hosting service moved this site to a different DNS (domain name servers that associate URLs with IP addresses). They fumbled the transfer, resulting in none of the other DNS on the Internet pointing to the correct IP address for this site. The correct information finally propagated across DNS some time Saturday.

I use 1and1 hosting, and until this have been pretty pleased with their service. They have been reliable even though not particularly accessible or responsive. Of course, as reliability falls, the importance of responsiveness increases - I'll let you know how things go...