Serious bug in BitTornado 0.3.9b

I found that BT 0.3.9b has a very serious bug. BT will not download as fast as it could through locally initiated connection. It means BT works best with incoming connection rather than outgoing connection made by itself. It turns out that clients behind firewall will be unable to download; however upload works fine here.

For the last year, I always ran BT behind firewall which blocks only outgoing connections to standard BT ports but incoming connections work fine. I found that incoming connection is the best condition to make BT as fast as it could even without outgoing connection at all.