I saw this thread and got reminded of something that is bothering me a bit. I've got an Ubuntu box running torrents for me (Transmission), and if I watch the network usage in System Monitor I get an upstream that is generally over 2x what I have the upstream limited to in Transmission. I know there should be some overhead in there, but when Transmission is limited to 27kB/sec up and I see 70KiB/sec up regularly in System Monitor I know something doesn't sound right. On a clean boot, launching only Transmission, I get this issue. I'm barely even a novice in linux so there exists a real possibility I'm missing something obvious here.