µTorrent Release Candidate 1 (2.0 build 17668) released

Feature Overview:

UDP trackers are a different protocol for tracker communication that uses significantly less processing power on the tracker end. It's important for us to support this because trackers have limited resources, so this should allow them to support many more users with their current hardware and not crash under the load.

uTP is an alternative communication method for BitTorrent traffic that allows the client to automatically regulate its bandwidth usage to avoid adversely impacting your internet connection. This will allow you or other users on the network to download their torrents but still allow others on the network to function with little difference. This does not require any additional setup.
In addition, uTP in this version has added its own form of STUN, a method of getting incoming connections without direct connectivity to the Internet. This allows µTorrent to punch holes through routers and firewalls to increase connectivity and improve speeds. It is even possible to connect two firewalled peers through uTP's NAT traversal feature.

The transfer cap settings were added in response to various users who have ISP-mandated caps on how much data they can download/upload in a month. Now you can track your usage in MB (with a handy graph to visualize it) and even configure µTorrent to stop torrenting once the limits are exceeded. Currently, you can configure the time interval, the data cap and whether it should stop based on only download, upload, or both combined.
As a privacy notice, this traffic data is not sent back to us or anyone.

-- 2009-12-21: Version 2.0 RC2 (build 17668)
- Fix: disconnect issue with seeds
- Fix: uTP over Teredo at high speeds, and MTU problems on some kinds of networks
- Fix: Add translations to new graph strings

-- 2009-12-15: Version 2.0 RC1 (build 17624)
- Change: New default artwork
- Fix: webui would allow any name for guest account when enabled.
- Fix: download/uploader limiter issues in build 17539

in reference to:

"µTorrent Release Candidate 1 (2.0 build 17668)"
- Download - µTorrent - a (very) tiny BitTorrent client (view on Google Sidewiki)