Hi I am having the same problem. I am running JBoss 4.0.5GA on JDK 1.5 and JBoss Portal I have hundreds on threads in the TIMED_WAITING status. Once they get in to this status they never come out of it. | Thread Group: JBoss Pooled Threads : max priority:10, demon:false | | Thread: WorkManager(3)-1 : priority:5, demon:true, threadId:40, threadState:WAITING, threadLockName:EDU.oswego.cs.dl.util.concurrent.Semaphore@1896f04d | | java.lang.Object.wait(Native Method) | java.lang.Object.wait(Object.java:474) | EDU.oswego.cs.dl.util.concurrent.Semaphore.acquire(Semaphore.java:108) | EDU.oswego.cs.dl.util.concurrent.SemaphoreControlledChannel.take(SemaphoreControlledChannel.java:131) | org.jboss.resource.adapter.mail.inflow.NewMsgsWorker.run(NewMsgsWorker.java:75) | org.jboss.resource.work.WorkWrapper.execute(WorkWrapper.java:204) | org.jboss. | | util.threadpool.BasicTaskWrapper.run(BasicTaskWrapper.java:275) | EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743) | java.lang.Thread.run(Thread.java:595) | | | OR | Thread: UIL2(SocketManager.MsgPool@60528e27 client=10.1.12.233:52183)#1 : priority:5, demon:true, threadId:91, threadState:TIMED_WAITING, threadLockName:EDU.oswego.cs.dl.util.concurrent.LinkedNode@76f2e414 | | java.lang.Object.wait(Native Method) | EDU.oswego.cs.dl.util.concurrent.SynchronousChannel.poll(SynchronousChannel.java:353) | EDU.oswego.cs.dl.util.concurrent.PooledExecutor.getTask(PooledExecutor.java:723) | EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:747) | java.lang.Thread.run(Thread.java:595) | | Only solution I have so far, is to restart JBoss app server. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4139819#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...