VCSWeb seems to be online on both nodes. Shouldn't ClusterService be a failover group?
I would investigate why the mxcpm9kh1101dc4 did not correctly leave the cluster.
2010/03/08 12:59:12 VCS NOTICE V-16-1-10322 System mxcpm9kh1401dc4 (Node '1') changed state from LEAVING to EXITING
2010/03/08 12:59:12 VCS NOTICE V-16-1-10322 System mxcpm9kh1401dc4 (Node '1') changed state from EXITING to EXITED
2010/03/08 12:59:18 VCS INFO V-16-1-10077 Received new cluster membership
2010/03/08 12:59:18 VCS NOTICE V-16-1-10112 System (mxcpm9kh1101dc4) - Membership: 0x1, DDNA: 0x2
2010/03/08 12:59:18 VCS ERROR V-16-1-10113 System mxcpm9kh1401dc4 (Node '1') is in DDNA Membership - Membership: 0x1, Visible: 0x0
Regards
Manuel
