Thank you martinelicohen

Go to your control panel & disable XP firewall (it is turned on by default). Then make sure McAffee firewall has an allowed rule for LW (LimeWire.) User Cant Connect - LimeWire

Your Linksys "might" be the problem depending on the model. If you can possibly find out the model number that would be greatly advantageous. It is probably written on the side or top or bottom of the router.

The problem to me sounds like either your software firewall or router or both. Only one software firewall should be enabled. Two firewalls mean less security & side effects problems, not more security.

Routers have NAT which acts as a type of firewall as it restricts incoming messages on certain ranges of ports on the particular ip address it is set to.

Port 6346 is not blocked which means you should be able to connect, but something is preventing incoming messages; ie: software firewall(s) or router.