Bitorrent was working up and fine until I installed Norton Antivirus 2006. After this was installed and tried to download a number of torrents, they each said "Couldn't listen - unable to forward port via UPnP" I have a linksys router, and followed the instructions on forwarding ports through my router. After doing this, nothing changed so I went into Norton's worm protection, and told it to "Permit All" from the bitorrent .exe file. Still nothing has changed! Does anybody know what I should do?