The reason Limewire is banned is that it does not always respect tracker announce times, and at times does not sent a stopped message to let the tracker know that it's out of the swarm. You cannot turn of completely DHT (Main reason I think). Also it changes the folder (at least it did when I tried it). It is usually listed together with the likes of FrostWire, Shareaza etc. as not a proper BitTorrent client.

Use Azureus or uTorrent for torrents.