nodes are red but quorum???

hi

tonight a node left and joined the cluster...
now in the gui i see all the others nodes in red and cant work with it...

pvecm nodes
Node Sts Inc Joined Name
1 M 632 2013-12-02 22:06:06 node1
2 M 624 2013-12-02 22:05:40 node7
3 M 632 2013-12-02 22:06:06 node2
4 M 644 2014-02-07 03:31:37 node5
5 M 632 2013-12-02 22:06:06 node4
6 M 632 2013-12-02 22:06:06 node3
7 M 632 2013-12-02 22:06:06 node6
8 M 632 2013-12-02 22:06:06 node8

pvecm status
Version: 6.2.0
Config Version: 8
Cluster Name: cluster01
Cluster Id: 53601
Cluster Member: Yes
Cluster Generation: 644
Membership state: Cluster-Member
Nodes: 8
Expected votes: 8
Total votes: 8
Node votes: 1
Quorum: 5
Active subsystems: 5
Flags:
Ports Bound: 0
Node name: node7
Node ID: 2
Multicast addresses: 239.192.209.51
Node addresses: 192.168.11.7

this looks like the cluster is ok???
but why are the nodes red?

best regards