Errors in async listeners execution

*2009-02-02 11:53:05,057 ERROR [org.nuxeo.ecm.core.event.impl.AsyncEventExecutor] Failed to execute async event emptyDocumentModelCreated on listener org.nuxeo.ecm.platform.comment.listener.DocumentRemovedCommentEventListener@1b4ba99
javax.ejb.NoSuchEJBException: Could not find stateful bean: 5c4o2z-qptg50-fqp0rkpp-1-fqp0wram-43
at org.jboss.ejb3.cache.simple.SimpleStatefulCache.get(SimpleStatefulCache.java:390)
at org.jboss.ejb3.cache.simple.SimpleStatefulCache.get(SimpleStatefulCache.java:375)

*2009-02-02 11:53:05,066 ERROR [org.nuxeo.ecm.core.event.impl.AsyncEventExecutor] Failed to execute async event emptyDocumentModelCreated on listener org.nuxeo.ecm.platform.audit.listener.AuditEventLogger@589c66bc
javax.ejb.EJBTransactionRolledbackException: Could not find stateful bean: 5c4o2z-qptg50-fqp0rkpp-1-fqp0wram-43
at org.jboss.ejb3.tx.Ejb3TxPolicy.handleInCallerTx(Ejb3TxPolicy.java:87)
at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:130)

• 2009-02-02 11:53:05,082 ERROR [org.nuxeo.ecm.core.event.impl.AsyncEventExecutor] Failed to execute async event emptyDocumentModelCreated on listener org.nuxeo.ecm.platform.ec.notification.NotificationEventListener@715c2e3a
  javax.ejb.NoSuchEJBException: Could not find stateful bean: 5c4o2z-qptg50-fqp0rkpp-1-fqp0wram-43
  at org.jboss.ejb3.cache.simple.SimpleStatefulCache.get(SimpleStatefulCache.java:390)
  at org.jboss.ejb3.cache.simple.SimpleStatefulCache.get(SimpleStatefulCache.java:375)

• 2009-02-02 11:53:08,286 ERROR [org.nuxeo.ecm.core.jms.JMSEventListener] received an Document related event witout session id

• 2009-02-02 11:53:09,586 ERROR [org.nuxeo.ecm.core.event.tx.EventBundleTransactionHandler] Error during Commit
  javax.transaction.RollbackException: [com.arjuna.ats.internal.jta.transaction.arjunacore.commitwhenaborted] [com.arjuna.ats.internal.jta.transaction.arjunacore.commitwhenaborted] Can't commit because the transaction is in aborted state
  at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1401)
  at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:135)
  at com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.commit(BaseTransactionManagerDelegate.java:87)
  at org.jboss.tm.usertx.client.ServerVMClientUserTransaction.commit(ServerVMClientUserTransaction.java:140)
  at org.nuxeo.ecm.core.event.tx.EventBundleTransactionHandler.commitOrRollbackTransaction(EventBundleTransactionHandler.java:181)
  at org.nuxeo.ecm.core.event.impl.AsyncEventExecutor$Job.run(AsyncEventExecutor.java:108)
  at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
  at java.lang.Thread.run(Thread.java:595)
  Caused by: java.lang.NullPointerException
  at org.nuxeo.jboss.interceptors.NXSessionSynchronizationInterceptor$SFSBSessionSynchronization.beforeCompletion(NXSessionSynchronizationInterceptor.java:65)
  at com.arjuna.ats.internal.jta.resources.arjunacore.SynchronizationImple.beforeCompletion(SynchronizationImple.java:114)