StateTransferFunctionalTest-testConcurrentStateTransfer sometimes fails

Sometimes StateTransferFunctionalTest-testConcurrentStateTransfer fails as shown here

http://hudson.qa.jboss.com/hudson/view/Infinispan/job/Infinispan-trunk-JDK6-tcp/org.infinispan$infinispan-core/997/testReport/org.infinispan.statetransfer/StateTransferFunctionalTest-testConcurrentStateTransfer/org_infinispan_statetransfer_StateTransferFunctionalTest_testConcurrentStateTransfer/

I tried to replicate it with TRACE on org.infinispan and I managed to only replicate it 1st time around. When it fails, it seems CacheStarter-Cache3 does not join the other cluster and hence it does not do state transfer. Please find attached infinispan log file.

I tried to add JGroups trace but I haven't been able to replicate it ever since.