I have a question regarding a 2 node nw6 sp5 cluster. Last week the cluster went down and for some odd reason the second node could not join with the 2090 Join retry some other node has acquired master lock. I have tried most of the TID suggestions to no avail. Could it be due to cluster 1.6.4 and needs to be upgraded? I tried a different NIC but no resolve. I recreated the SBD partition but still same behavior. When I plugged a crossover cable between nodes the other node joined just fine. I know there must be a communication issue but has anyone seen this before?