Have you tried enabling UPnP within the modem?
Have you tried port forwarding?
Have you tried changing to a higher port (say 64049)?
Have you been able to use any other p2p apps successfully since you've had this prob with LW?
Check Aaron's posts in the thread below for some info about Alltel...might have something to do with your problem?
http://www.gnutellaforums.com/showth...ghlight=Alltel