Well, it seems that your assumption is wrong. Like you, I share tons of files and got tons of transfer interrupted. Never any uploads completed. I changed OS from XP to Win2003Server and now everything is fine. I have 5 computers, 4 of which are running xppro, none of them upload files. But of course, now this one does, using the new OS. Nothing else has changed as far as hardware, routers, antivirus, firewalls (both software and hardware). So, it must be the way Limewire works with the operating system (XP).