All this back and forth sounds like one side is a flame. I'll give you three guesses which one

Oh and one last thing Angmar.

Be sure to use some popular easy to find file for your tests, and include all relevant info like IP address sent to, to size of package, exactly what incriminating data, hash values of the file. The works. And of course Vuze version, port numbers and anything else you can think of to let others be able to duplicate the results. Time online, how long the torrent was loaded in your client. How often this phenomena occurs etc. etc.