Dose Limewire 4.13 (beta) use IP Multicasting to find other peers in the network. Seemed when I opened up Limewire ran a query Port 5353 was picking up some noise. I also downloaded an update from Microsuck that said it deals with P2P interface. If anyone knows anything about Limewire using Multicasting or if it was the new MS update I would be pleased to know. I heard alot of good things about IP Multicasting.