On the other hand I observed that not ALL the Xunlei / Thunder peers are acting like that. In that case uT is again and again unchoking (randomly / optimistically) and sending MB of pieces to these leeches yet never getting anything worth to mention in exchange. I observed that they unchoke my client but they never send any block of the piece my client requests. They remain (connected) in the swarm taking everything they can yet never giving a block back or maybe a block (16kb) every 2 hours. The recurring problem with these Xunlei / Thunder peers is that most of them just leech out and give back almost or simply plain nothing.
Though many people on 'this side of the wall' may think that only a marginal fraction of the BT users are using this weird (at least not natively available in English.) client in the world, uT having the Lion part, they are fully mistaken according to some statistics published not so long ago on TorrentFreaks. Recently I have been more involved in swarms with a lot of far east peers, most of them using the Xunlei 0.1 client.
