diff -ruN samba-3.5.4.a/source3/winbindd/winbindd_util.c samba-3.5.4.b/source3/winbindd/winbindd_util.c
--- samba-3.5.4.a/source3/winbindd/winbindd_util.c	2010-06-18 14:01:04.000000000 +0200
+++ samba-3.5.4.b/source3/winbindd/winbindd_util.c	2010-07-21 15:33:49.000000000 +0200
@@ -76,6 +76,17 @@
 	if (sid == NULL)
 		return False;
 
+	/* This is to show the different results of this function between
+	   samba versions 3.4.8 and 3.5.4, for bug 7481 */
+	static bool res_v34x, res_v35x;
+	res_v35x = (sid_check_is_domain(sid) || sid_check_is_builtin(sid));
+	if ( IS_DC ) {
+		res_v34x = sid_check_is_builtin(sid);
+		DEBUG(3,("is_internal_domain(): 3.5.x would return %d\n", res_v35x));
+		DEBUG(3,("is_internal_domain(): 3.4.x would return %d\n", res_v34x));
+		return (res_v34x);
+	}
+
 	return (sid_check_is_domain(sid) || sid_check_is_builtin(sid));
 }