diff -up bind-dyndb-ldap-0.2.0/src/semaphore.c.rh727856 bind-dyndb-ldap-0.2.0/src/semaphore.c
--- bind-dyndb-ldap-0.2.0/src/semaphore.c.rh727856	2011-08-02 18:03:49.034837252 +0200
+++ bind-dyndb-ldap-0.2.0/src/semaphore.c	2011-08-03 14:44:42.230665446 +0200
@@ -83,9 +83,9 @@ semaphore_wait(semaphore_t *sem)
 
 	LOCK(&sem->mutex);
 
-	sem->value--;
-	if (sem->value < 0)
+	while (sem->value <= 0)
 		WAIT(&sem->cond, &sem->mutex);
+	sem->value--;
 
 	UNLOCK(&sem->mutex);
 }