Matt, you were absolute right, i was using CAPThread.h, and by default it created a detached thread.... I should have checked the result pthread_join, so my mistake... sorry for bandwidth, mvo On Sep 9, 2004, at 2:31 PM, Matt Watson wrote: _______________________________________________ darwin-development mailing list | darwin-development@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-development Do not post admin requests to the list. They will be ignored. I still don't understand why the pthread_join doesn't work.. What's the return value from the pthread_join() call? Is the thread detached? That's the most common reason pthread_join() returns non-zero. Can you post a small, compilable example of this problem? Without a self-contained test case, it's going to be difficult to answer your question... matt.