Limewire vs. uTorrent on chokeability factor

Any idea why my internet chokes whilst downloading using uTorrent but not when downloading with Limewire? Its strange because overall im getting better download rates within Limewire. But usually when im using uTorrent i cant use a browser, it just wont work. I can with Limewire. Is this because im also uploading when using uTorrent?

Also, i never use the two simultaneously. FYI.

have you configured utorrent for you connection, using this guide?
http://utorrent.com/setup_guide.php

it could well be because your uploading although if you dont know how to tell in utorrent the chances are that your uploading rather alot in limewire too :S

follow the guide.