µTorrent is an efficient and feature rich BitTorrent client for Windows sporting a very small footprint. It was designed to use as little cpu, memory and space as possible while offering all the functionality expected from advanced clients.
Note: 12639 is out and on the automatic updater for all users. The only fix since 12616 is to prevent µTorrent from showing the installer dialog when upgrading from an older version. There are no other changes, and if you are already on 12616, there is no reason to update.
Tracker admins, please allow both builds (12616 and 12639). The user-agent is identical for both.

--- 2008-10-06: Version 1.8.1 (build 12616)
- Fix: disconnect inactive peers sometimes not taking effect
- Fix: rare crash with very large peer lists