Yesterday i switched to rtorrent 0.8.4 (debian build from experimental).
Rtorrent after some little adjustment in the configuration file has started working. I just had some problems with the torrent which i hadn’t completed.
Except these two little problems it just works, along with the ruby controller too (without any modification).
In the meanwhile I have added some little fixes to the controller and a new feature.
Now the available upload bandwidth is decreased by a fraction of the actual rtorrent download speed.
This is done to prevent even further to rtorrent to make itself slower flooding the upload bandwidth with ack packets.