I don't think I have any other torrents running I just install tixati and download only 2 files, no other clients running too.
I also didn't do anything on the channel(I don't even know what it's all about)
additional screenshot :
http://i.imgur.com/yisCxAv.jpg
another one :
http://i.imgur.com/ydW4u7l.jpg
You can see on this one that it's going normal for a while, then torrents D/L and U/L is going down to the floor and Tixati start to eat up all bandwidth.
I can't open any websites when this happen, I have to stop all torrents or close the client itself.
(My internet connection is 13Mbps/1Mbps)