Im getting the following exception:

2007-10-08 11:55:56,201 ERROR [org.jboss.resource.adapter.jms.inflow.JmsServerSession] Unexpected error delivering message delegator->JBossMessage[264975]:PERSISTENT, deliveryId=159
javax.ejb.EJBException: Failed to acquire the pool semaphore, strictTimeout=10000
 at org.jboss.ejb3.StrictMaxPool.get(StrictMaxPool.java:122)
 at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:54)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.mdb.MessagingContainer.localInvoke(MessagingContainer.java:245)
 at org.jboss.ejb3.mdb.inflow.MessageInflowLocalProxy.delivery(MessageInflowLocalProxy.java:268)
 at org.jboss.ejb3.mdb.inflow.MessageInflowLocalProxy.invoke(MessageInflowLocalProxy.java:138)
 at $Proxy4055.onMessage(Unknown Source)
 at org.jboss.resource.adapter.jms.inflow.JmsServerSession.onMessage(JmsServerSession.java:178)
 at org.jboss.jms.client.container.ClientConsumer.callOnMessage(Unknown Source)
 at org.jboss.jms.client.container.SessionAspect.handleRun(Unknown Source)
 at org.jboss.aop.advice.org.jboss.jms.client.container.SessionAspect14.invoke(SessionAspect14.java)
 at org.jboss.jms.client.delegate.ClientSessionDelegate$run_N8003352271541955702.invokeNext(ClientSessionDelegate$run_N8003352271541955702.java)
 at org.jboss.jms.client.container.ClosedInterceptor.invoke(Unknown Source)
 at org.jboss.aop.advice.PerInstanceInterceptor.invoke(PerInstanceInterceptor.java:105)
 at org.jboss.jms.client.delegate.ClientSessionDelegate$run_N8003352271541955702.invokeNext(ClientSessionDelegate$run_N8003352271541955702.java)
 at org.jboss.jms.client.delegate.ClientSessionDelegate.run(Unknown Source)
 at org.jboss.jms.client.JBossSession.run(Unknown Source)
 at org.jboss.resource.adapter.jms.inflow.JmsServerSession.run(JmsServerSession.java:237)
 at org.jboss.resource.work.WorkWrapper.execute(WorkWrapper.java:204)
 at org.jboss.util.threadpool.BasicTaskWrapper.run(BasicTaskWrapper.java:275)
 at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743)
 at java.lang.Thread.run(Thread.java:595)