port forwarding?in bridge mode,jus open a random port(like 50471) via iptables frontend's like lokkit,firestarter or for kde-guarddog etc),enter openport no. into ur torrent client tcp port option.that's it!.
afair,port forwarding is have to do with router used as pppoe dialer.then u have to enable virtual server and few other configurations too in router.
*portforward.com helps
BTW,I get decent speed in deluge aswellas azureus in bridge mode with dataone h500.torrents-nighttime d/l speed reaches 207KB/s(till last may it was 217KB/s
) while i upload at 20KB/S