I have been noticing that more and more hubs are disappearing from IM lately. They show up in the tunnel status window and the queue is active and sending messages, but they do not appear in the IM tree structure. I have added a hub to the Name services/Static hubs window, in one case it detected the hub, in others it did not. These hubs are clients, going through tunnels to a hub in a DMZ then to our main domain hub. Ideas?