2013-09-01 - Disable DHT !!!
If you answered the poll and need help with DHT settings then check the links below, if your client is not listed then please use google to find them.

uTorrent setup and optimization

Disable DHT


And here are some other threads you may find useful:

Beginners guide to IPT

Best practice to increase ratio

Ratio help

H&R Q&A

How to re seed a removed .torrent in Utorrent