[Linux-cluster] Can't join cluster?

[isplist at logicore.net]

# cman_tool status
Protocol version: 5.0.1
Config version: 68
Cluster name: vgcomp
Cluster ID: 6990
Cluster Member: No
Membership state: Not-in-Cluster

The other nodes all join just fine. I can't seem to find a reason for this one 
not to join now? Just like all of the other nodes, all of the services are 
running, everything's the same but it's not joining.

I know this is something simple, can someone give me a few ideas on what to 
look for in finding the solution here.

Mike