Still non-connectable?, page 2

To get Vuze 4.2 connected to a coonectable peer when in seeding mode you need to set the option:
Tools->Options...->Connection
Peer Sources:
From a tracker
With this option set Vuze will initiate a connection to a peer which IP is supplied by the tracker.

You need the option Incoming connection also to allow connections initiated by the peers but it obviously works if you are connectable.