Some new versions of bittorrents clients such
Azureus [2.0.* - 220.127.116.11 - 18.104.22.168 - 22.214.171.124_B*]
BitTorrent [3.9.1 - 4.0.2 - Plus! - Storm - Linux - Experimental]
This versions make a fake ratio but some webs like this one http://www.btarg.com.ar:81/tracker/ (spanish) they now are banning a lot of users and torrents clients.
In the main page you have more info about this note.
so becarefull with this if you donīt want to be banned.