--- a/src/thread_pthread.cpp	Mon Apr 28 23:34:23 2008 +0000
+++ b/src/thread_pthread.cpp	Mon Apr 28 23:48:45 2008 +0000
@@ -63,7 +63,9 @@
 
 	/* virtual */ bool IsRunning()
 	{
-		return m_thr != 0;
+		int sval;
+		sem_getvalue(&m_sem_stop, &sval);
+		return sval == 0;
 	}
 
 	/* virtual */ bool WaitForStop()