Due to endless instability with the Mod layer suitable for 1.2, we have reverted back to MC 1.1.

Once again these instructions are valid:
http://www.buxville.net/showthread.php/6223-Can-t-connect-to-Buxville-after-MC-update

Two days wastes, for me, and likely for many players, as the map had to be rolled back as well, due to the new blocks being incompatible with 1.1. It's going to take a while before we can move on to 1.2, the Mod community is currently a mess.