--- common/lock.c.old	2013-06-04 15:21:30.000000000 +0100
+++ common/lock.c	2013-11-26 18:48:05.080172267 +0000
@@ -671,7 +671,7 @@
 		return 0;
 	}
 
-	if (!mark_lock && tdb_brunlock(tdb, ltype, FREELIST_TOP, 0)) {
+	if (!mark_lock && tdb_brunlock(tdb, ltype, FREELIST_TOP, tdb->hash_size * 4)) {
 		TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_unlockall failed (%s)\n", strerror(errno)));
 		return -1;
 	}