With the bogus hosts who knows maybe another RIAA sabotage attempt...
Just dump the current Ultrapeers you have and let LW search for some more...
As for the firewall if you have configured your's correctly and have made LW an acception, it might mean you have a Nat firewall in your modem/router, so you will have to give some info about the make and model number for it, so I can check if it's listed...