HornetQ journal problem when using Azul Zing JVM in JBoss EAP 6

Issue

we changed our application from sun jdk to azul jdk and are getting the following exception:

2013-03-19 14:01:25,002] [WARN ] [org.hornetq.core.journal.impl.JournalImpl] Invalid read! The system couldn't read the entire file into memory: java.lang.RuntimeException: Invalid read! The system couldn't read the entire file into memory
    at org.hornetq.core.journal.impl.JournalImpl.readJournalFile(JournalImpl.java:434) [hornetq-core-2.2.23.Final-redhat-1.jar:2.2.19.SNAPSHOT (HQ_2_2_23_Final, 122)]
    at org.hornetq.core.journal.impl.JournalImpl.load(JournalImpl.java:1898) [hornetq-core-2.2.23.Final-redhat-1.jar:2.2.19.SNAPSHOT (HQ_2_2_23_Final, 122)]
    at org.hornetq.core.journal.impl.JournalImpl.load(JournalImpl.java:1496) [hornetq-core-2.2.23.Final-redhat-1.jar:2.2.19.SNAPSHOT (HQ_2_2_23_Final, 122)]
    at org.hornetq.core.journal.impl.JournalImpl.load(JournalImpl.java:1480) [hornetq-core-2.2.23.Final-redhat-1.jar:2.2.19.SNAPSHOT (HQ_2_2_23_Final, 122)]
    at org.hornetq.core.persistence.impl.journal.JournalStorageManager.loadMessageJournal(JournalStorageManager.java:935) [hornetq-core-2.2.23.Final-redhat-1.jar:2.2.19.SNAPSHOT (HQ_2_2_23_Final, 122)]
    at org.hornetq.core.server.impl.HornetQServerImpl.loadJournals(HornetQServerImpl.java:1656) [hornetq-core-2.2.23.Final-redhat-1.jar:2.2.19.SNAPSHOT (HQ_2_2_23_Final, 122)]
    at org.hornetq.core.server.impl.HornetQServerImpl.initialisePart2(HornetQServerImpl.java:1498) [hornetq-core-2.2.23.Final-redhat-1.jar:2.2.19.SNAPSHOT (HQ_2_2_23_Final, 122)]
    at org.hornetq.core.server.impl.HornetQServerImpl.access$1200(HornetQServerImpl.java:138) [hornetq-core-2.2.23.Final-redhat-1.jar:2.2.19.SNAPSHOT (HQ_2_2_23_Final, 122)]
    at org.hornetq.core.server.impl.HornetQServerImpl$NoSharedStoreLiveActivation.run(HornetQServerImpl.java:2180) [hornetq-core-2.2.23.Final-redhat-1.jar:2.2.19.SNAPSHOT (HQ_2_2_23_Final, 122)]
    at org.hornetq.core.server.impl.HornetQServerImpl.start(HornetQServerImpl.java:372) [hornetq-core-2.2.23.Final-redhat-1.jar:2.2.19.SNAPSHOT (HQ_2_2_23_Final, 122)]
    at org.hornetq.jms.server.impl.JMSServerManagerImpl.start(JMSServerManagerImpl.java:282) [hornetq-jms-2.2.23.Final-redhat-1.jar:2.2.19.SNAPSHOT (HQ_2_2_23_Final, 122)]
    at org.jboss.as.messaging.jms.JMSService.start(JMSService.java:73) [jboss-as-messaging-7.1.3.Final-redhat-4.jar:7.1.3.Final-redhat-4]
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA-redhat-2.jar:1.0.2.GA-redhat-2]
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA-redhat-2.jar:1.0.2.GA-redhat-2]
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_31]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_31]
    at java.lang.Thread.run(Thread.java:661) [rt.jar:1.6.0_31]