Could you try running 3.1 to see if your CPU use improves? Active cpu 4-11 Active scrolling cpu 45-55 running background cpu 1-4 cpu: intel core 2 duo T5400 Yes' date=' it does improve a lot, especially when not active and running in the background but the trackers I'm using still not accept 3.1. reversed back to 3.0 and wait for 3.1 become stable and accepted in my trackers :/ p/s: just out of curiosity, does utorrent uses that much resources for scrolling or it just happens to a big list of Japaneses torrents?[/quote'] Could you try 2.2.1 to see if it works better in terms of CPU usage? Just to know for sure. http://download.utorrent.com/3.0/utorrent-2.2.1.exe Would you be willing to try some test builds later to give us more info about what's consuming so much CPU?