The JMX issues should be sorted now.
There were two issues here: one was the one manik said, and the other was the fact that we were leaking cache mbeans, and it would result in domain conflicts.
Both issues solved now.
Some other issues remain around query (https://issues.jboss.org/browse/ISPN-2314) and some other modules:
https://infinispan.ci.cloudbees.com/job/Infinispan-master-JDK6-tcp/825/