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java.util.ConcurrentModificationException at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:444) at java.util.AbstractList$Itr.next(AbstractList.java:421) at com.sun.enterprise.distributedtx.J2EETransactionManagerImpl.componentDestroyed(Unknown Source) at com.sun.ejb.containers.StatefulSessionContainer.undeploy(Unknown Source) at com.sun.ejb.containers.StatefulSessionStore.undeploy(Unknown Source) at com.sun.ejb.containers.StatefulSessionContainer.undeploy(Unknown Source) at com.iplanet.ias.server.AbstractLoader.unloadEjbs(Unknown Source) at com.iplanet.ias.server.ApplicationLoader.unload(Unknown Source) at com.iplanet.ias.server.ApplicationManager.applicationUndeployed(Unknown Source) at com.iplanet.ias.server.ApplicationManager.reload(Unknown Source) at com.iplanet.ias.server.ReloadMonitor.run(Unknown Source) at java.util.TimerThread.mainLoop(Timer.java:432) at java.util.TimerThread.run(Timer.java:382)