> I don't know the function of the Groupsock.fMembers It's special-purpose code that is used only for our multicast-over-unicast tunneling (UMTP) agents ("liveGate" and "liveGate for Intranets"). For everything else, it's just an empty set, so you should not concern yourself with it. Ross Finlayson LIVE.COM <http://www.live.com/>