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.

Changelog:
- Feature: support 'failure reason' in scrape response
- Feature: optional piece progress bar
- Change: (yet another) new installation dialog
- Change: More informative error message for misc. autoupdate errors
- Change: Return to 1.7-style RSS errors
- Change: remove 1000 files warning in create torrent
- Change: Turn off sparse files and turn on compact allocation by default on Vista, because it has a    terrible bug
- Change: don not enable a feed when Update Feed is selected
- Change: send rejects to FAST extension peers that request the same piece again before it's sent
- Change: grey out Update Feed when feed is disabled
- Change: change Toggle Feed to Enable/Disable Feed
- Change: update free space on focus change in create torrent
- Change: some RSS speed optimizations for large history and feed item counts
- Fix: Tab order issues in Add Feed dialog
- Fix: magnet URI download directory is now default download directoy
- Fix: Display of "&" characters in title of folder browsing dialog on Windows versions less then Vista, and give Vista version a title
- Fix: Preferences tab order
- Fix: Longstanding bug where dialogs that inside tab controls did not have the proper background when using XP themes
- Fix: Issue where it would stay as admin user after autoupdating through a normal user
- Fix: element not found and 99% cpu bug with partfiles
- Fix: piece picker bug that would cause it to start more equally rare pieces than needed
- Fix: key sort order with extension handshake
- Fix: download bar toggle
- Fix: external IP detection with NAT-PMP and non-conforming routers (like the Airport Extreme...)
- Fix: rare "invalid packet length" bug with encrypted connections
- Fix: Feed names not displaying unicode characters properly in category view
- Fix: Element Not Found when using partfiles with compact allocation