If you're running as an ultrapeer it's not so important that people are uploading from you. So long as there's no impedance there. I'm not much of a knowledge on Ultrapeers & Murasame is much better at finessing the settings for optimal performance. Murasame hasn't been around much lately. I can try to refer you to another member for some advice. I just hope they're online soon ... oh hold on it's 7 am there so perhaps a little later.
The reason I was asking about usb connection is that usb can cause issues with reliable performance.
I see you're using pro. Have you thought about updating. LW 4.6 was released just days ago. I do know LW 4.2 had some bugs.
Another person who might be able to help is Leeware. His post is here:
http://www.gnutellaforums.com/showth...5&pagenumber=1 (it's a large thread!)