Jboss-mq "Transaction timed out" and postgres "duplicate key violates unique constraint jms_messages_pkey" error

WARN [org.jboss.tm.TransactionImpl] Transaction TransactionImpl:XidImpl[FormatId=257, GlobalId=nutxt-db1/3, BranchQual=, localId=3] timed out. status=STATUS_ACTIVE
When restarting Jboss, it took about 12minutes before showing "timed out"

and after a while a postgres sql error occurs :

2008-07-01 10:03:09,563 WARN [org.jboss.tm.TransactionImpl] XAException: tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=nutxt-db1/154326, BranchQual=, localId=154326] errorCode=XAER_RMERR
org.jboss.mq.SpyXAException: Resource manager error during commit; - nested throwable: (org.jboss.mq.SpyTransactionRolledBackException: Transaction was rolled back.; - nested throwable: (org.jboss.mq.SpyJMSException: Could not store message: 56987 msg=9191 hard NOT_STORED PERSISTENT queue=TOPIC.NXPMessages.ID:10.-2147483648 priority=4 lateClone=false hashCode=22499078; - nested throwable: (org.postgresql.util.PSQLException: ERROR: duplicate key violates unique constraint "jms_messages_pkey")))
at org.jboss.mq.SpyXAException.getAsXAException(SpyXAException.java:72)
at org.jboss.mq.SpyXAResource.commit(SpyXAResource.java:92)
at org.jboss.tm.TransactionImpl$Resource.commit(TransactionImpl.java:2253)
at org.jboss.tm.TransactionImpl.commitResources(TransactionImpl.java:1784)
at org.jboss.tm.TransactionImpl.commit(TransactionImpl.java:340)
at org.jboss.tm.TxManager.commit(TxManager.java:240)
at org.jboss.aspects.tx.TxPolicy.endTransaction(TxPolicy.java:175)
at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:87)
at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:191)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateful.StatefulInstanceInterceptor.invoke(StatefulInstanceInterceptor.java:83)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.security.RoleBasedAuthorizationInterceptor.invoke(RoleBasedAuthorizationInterceptor.java:166)
at org.jboss.ejb3.security.RoleBasedAuthorizationInterceptor.invoke(RoleBasedAuthorizationInterceptor.java:108)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:102)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateful.StatefulContainer.dynamicInvoke(StatefulContainer.java:319)
at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:106)
at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:828)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:681)
at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:358)
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:412)
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:239)
Caused by: org.jboss.mq.SpyTransactionRolledBackException: Transaction was rolled back.; - nested throwable: (org.jboss.mq.SpyJMSException: Could not store message: 56987 msg=9191 hard NOT_STORED PERSISTENT queue=TOPIC.NXPMessages.ID:10.-2147483648 priority=4 lateClone=false hashCode=22499078; - nested throwable: (org.postgresql.util.PSQLException: ERROR: duplicate key violates unique constraint "jms_messages_pkey"))
at org.jboss.mq.server.JMSDestinationManager.transact(JMSDestinationManager.java:450)
at org.jboss.mq.server.JMSServerInterceptorSupport.transact(JMSServerInterceptorSupport.java:126)
at org.jboss.mq.security.ServerSecurityInterceptor.transact(ServerSecurityInterceptor.java:197)
at org.jboss.mq.server.TracingInterceptor.transact(TracingInterceptor.java:352)
at org.jboss.mq.server.JMSServerInvoker.transact(JMSServerInvoker.java:132)
at org.jboss.mq.il.uil2.ServerSocketManagerHandler.handleMsg(ServerSocketManagerHandler.java:191)
at org.jboss.mq.il.uil2.SocketManager$ReadTask.handleMsg(SocketManager.java:395)
at org.jboss.mq.il.uil2.msgs.BaseMsg.run(BaseMsg.java:398)
at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:748)
at java.lang.Thread.run(Thread.java:595)
Caused by: org.jboss.mq.SpyJMSException: Could not store message: 56987 msg=9191 hard NOT_STORED PERSISTENT queue=TOPIC.NXPMessages.ID:10.-2147483648 priority=4 lateClone=false hashCode=22499078; - nested throwable: (org.postgresql.util.PSQLException: ERROR: duplicate key violates unique constraint "jms_messages_pkey")
at org.jboss.mq.pm.jdbc2.PersistenceManager.saveToStorage(PersistenceManager.java:1646)
at org.jboss.mq.server.MessageCache.saveToStorage(MessageCache.java:420)
at org.jboss.mq.server.MessageReference.makeSoft(MessageReference.java:312)
at org.jboss.mq.server.MessageCache.validateSoftReferenceDepth(MessageCache.java:367)
at org.jboss.mq.server.MessageCache.addInternal(MessageCache.java:158)
at org.jboss.mq.server.MessageCache.add(MessageCache.java:128)
at org.jboss.mq.server.JMSTopic.addMessage(JMSTopic.java:416)
at org.jboss.mq.server.JMSDestinationManager.addMessage(JMSDestinationManager.java:415)
at org.jboss.mq.server.JMSDestinationManager.transact(JMSDestinationManager.java:434)
... 9 more
Caused by: org.postgresql.util.PSQLException: ERROR: duplicate key violates unique constraint "jms_messages_pkey"
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:1548)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1316)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:191)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:452)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:351)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeUpdate(AbstractJdbc2Statement.java:305)
at org.jboss.resource.adapter.jdbc.WrappedPreparedStatement.executeUpdate(WrappedPreparedStatement.java:251)
at org.jboss.mq.pm.jdbc2.PersistenceManager.add(PersistenceManager.java:1136)
at org.jboss.mq.pm.jdbc2.PersistenceManager.saveToStorage(PersistenceManager.java:1632)
... 17 more