Either the UPnP implementation is not good or the issue is something else. If you have XP Service Pack 2, it might be worth seeing this http://www.lvllord.de/?url=tools

If you're using XP, then disable XP's firewall. XP & Norton FW's don't run well together.

It might also be worth checking your LW settings. Check how many slots you have for uploading. If there's too many, reduce them. Also allow yourself upload bandwith for browsing, so it might be worth dropping the upload bandwidth slightly. It might also be worth dropping downld bandwidth very slightly.

Another tip, don't use the Resume/Find Sources function on all your incomplete files at one time (if you have many incomplete files.) This can potentially cause problems such as steal all your bandwidth, use up all of LW's & your comp's resources, & possible cause communication problems between your computer & router. Thus, if you use this function, it is probably better to use it on only 1-3 at a time.