Well, that's embarrassing. A reboot did fix it; odd, because 1.4.1pre was running just fine w/o a restart.
I'm seeing the same behavior; this is a bug because EVEN with an exception for Minecraft in the list of applications allowed past the firewall, the lan connection will not work unless the firewall is completely disabled.
Well, that's embarrassing. A reboot did fix it; odd, because 1.4.1pre was running just fine w/o a restart.