I had to return back to 2.0.4 2.2 - crazy CPU usage, staying at 24-25% minimum (quad-core CPU) - at that CPU usage, non-responsive, useless. 2.0.4 - 4-7% in comparison, with the same settings, downloading the same torrents. Even though 2.0.4 not perfect either, to stay so low, I had to reduce global maximum/peers per torrent/upload slots, active torrents, active downloads - not sure which ones important. The most important would be max upload/download rates, but I don't want to limit them. But 2.2 CPU usage 25% with the same reduced settings! Tried several times, from the very moment it shows up on the screen - already 25%, even though no active torrents yet. Again, with 2.0.4 - 5%, with 2.2 - 25 % - CPU usage increased 5 times. Perhaps there are some 2.2-specific new settings to limit the CPU usage? BTW, even with 2.0.4 no settings can limit CPU usage during fast downloads (unless limiting the download speed itself): Now I have 9.5 MB/s download speed (with overhead, perhaps close to 100 Mbps?) and 22-25% CPU with 2.0.4 But 2.2 was using 25% without any download speed to speak of. Sometimes I have similar > 9.5 MB/s upload speed, but it does not seem to cause such high CPU usage, download is worse. Another thing, I am using multiple hard drives, internal, eSATA, and multiple USB drives, slow drives perhaps have something to do with it? Although even when there is no overload indication, still high cpu usage. BTW - disk overload message - it would be nice to know which disk. I have simultaneously 17 external and 8 interal (not enough letters, using also paths) and hundreds of active torrents and sometimes it is difficult to tell which disk, although, I assume, one or more of external USB ones.