--- asterisk/chan_h323.c	2008-08-27 09:33:20.930818500 +0300
+++ asterisk-patched/chan_h323.c	2008-08-27 09:34:21.177732300 +0300
@@ -3298,9 +3298,6 @@ static int unload_module(void)
 	}
 	if (!ast_mutex_lock(&monlock)) {
 		if ((monitor_thread != AST_PTHREADT_STOP) && (monitor_thread != AST_PTHREADT_NULL)) {
-			/* this causes a seg, anyone know why? */
-			if (monitor_thread != pthread_self())
-				pthread_cancel(monitor_thread);
 			pthread_kill(monitor_thread, SIGURG);
 			pthread_join(monitor_thread, NULL);
 		}