Hmm, having trouble with the server again? It was working fine yesterday night although I was getting a bit of lag before I disconnected for the night.
Also while I'm here, I've got a project that I'm working on that involves bows, minecarts, and mobs, oh my! (ok that doesn't really ryhme, but whatever). Right now I've got a small test track that is used to ferry the player around, but then I thought of maybe switching it around so that the mobs ride the carts and the player just shoot at them as they go by. I'd have to worry about the minecarts deconstructing from missed shots, though.