When upgrading my test cluster from 2.6.8.1 to 2.6.9, I rebooted my cluster 1 node at a time. I noticed that the 2.6.9 node did not join the cluster with the 2.6.8.1 nodes. When I reboot the 2nd node to 2.6.9, the 2 nodes running 2.6.9 formed a cluster, but the 3rd node running 2.6.8.1 was left in his own cluster without quorum. Does this mean one cannot have a cluster of mixed versions? This seems like it could be a problem for rolling upgrades (not a big deal right now). Daniel
