> "Please investigate and fix."
You probably meant "Please investigate and fix IMMEDIATELY.", right ?
Would you please be so kind to create a bug report in Bugzilla:
And, please, include some additional information: amount of memory, hardware platform and operating system details, and jvm runtime parameters for both nodes, JBoss version, cluster configuration parameters, etc.? JBoss log messages could be helpful also. Then Sacha can investigate and fix it ;-)
P.S. Sacha, where is emoticon?
This is probably due to you using the default configuration and banging the system with messages. In this case, I suggest you use the high-performance (flow-control) based configuration that I will add to JBoss within the next couple of weeks. In the meantime you can check out JGroups/conf/fc.xml or fc-fast.xml, and convert them to the format required by cluster-service.xml yourself.