Bittorrent bytes the phone

I've discovered over the past couple of days that when I'm running Bittorrent, the sound quality diminishes when talking on the phone. I'm not surprised actually. Running Bittorrent here on my G4 doesn't seem to interfere with the bandwidth elsewhere on the network. I can talk with Hyun-joo using Yahoo! Messenger's webcam and voice chatting without much loss in the signal.