project_key: SOA

Sometimes deliverSync blocks indefinitely. If the calling thread is terminated then it prints 
WARN [Thread-1][CourierFactory] Calling cleanup on existing couriers for identity ID-DEFAULT and hangs !! 

The last lines in log are 
2007-11-22 12:03:10,776 DEBUG [Thread-1][org.jboss.soa.esb.lifecycle.LifecycleResource] Cleaning up resource using factory: org.jboss.soa.esb.couriers.CourierFactory$LifecycleCourierFactory@16cd83d8 with identity ID-DEFAULT 
2007-11-22 12:03:10,776 WARN [Thread-1][org.jboss.soa.esb.couriers.CourierFactory] Calling cleanup on existing couriers for identity ID-DEFAULT 
2007-11-22 12:03:10,784 DEBUG [Thread-1][org.jboss.soa.esb.couriers.CourierFactory] Courier allocation stacktrace 
java.lang.Exception: Courier Assignment stacktrace 
at org.jboss.soa.esb.couriers.CourierFactory.registerCourier(CourierFactory.java:148) 
at org.jboss.soa.esb.couriers.CourierFactory.getCourier(CourierFactory.java:134) 
at org.jboss.soa.esb.couriers.CourierFactory.getMessageCourier(CourierFactory.java:96) 
at org.jboss.soa.esb.client.ServiceInvoker.getCourier(ServiceInvoker.java:338) 
at org.jboss.soa.esb.client.ServiceInvoker$EPRInvoker.attemptDelivery(ServiceInvoker.java:404) 
at org.jboss.soa.esb.client.ServiceInvoker$EPRInvoker.access$200(ServiceInvoker.java:370) 
at org.jboss.soa.esb.client.ServiceInvoker.post(ServiceInvoker.java:259) 
at org.jboss.soa.esb.client.ServiceInvoker.deliverSync(ServiceInvoker.java:155) 
at org.jboss.soa.esb.samples.quickstart.webservice_consumer1.WebServiceConsumerTest.postESBMessage(WebServiceConsumerTest.java:60) 
at org.jboss.soa.esb.samples.quickstart.webservice_consumer1.WebServiceConsumerTest.testWSConsumer(WebServiceConsumerTest.java:71) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
at java.lang.reflect.Method.invoke(Method.java:585) 
at org.testng.internal.MethodHelper.invokeMethod(MethodHelper.java:604) 
at org.testng.internal.InvokeMethodRunnable.run(InvokeMethodRunnable.java:36) 
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:417) 
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269) 
at java.util.concurrent.FutureTask.run(FutureTask.java:123) 
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675) 
at java.lang.Thread.run(Thread.java:595) 

The whole log is attached