https://bugzilla.samba.org/show_bug.cgi?id=10487
Common synopsis:  Samba Winbind GETGRENT interface fails when any trusted domain is not available
Bugs 16298670, 18191913

--- a/nsswitch/wb_common.c	2014-02-07 17:26:50.046234000 +0100
+++ b/nsswitch/wb_common.c	2014-02-07 17:33:40.280002000 +0100
@@ -462,7 +462,7 @@
 
 		if (ret == 0) {
 			/* Not ready for read yet... */
-			if (total_time >= 30) {
+			if (total_time >= 1000) {
 				/* Timeout */
 				winbind_close_sock();
 				return -1;
--- a/source3/winbindd/wb_next_grent.c	2014-02-07 17:27:14.079647000 +0100
+++ b/source3/winbindd/wb_next_grent.c	2014-02-07 17:58:36.599520000 +0100
@@ -103,18 +103,16 @@
 	TALLOC_FREE(subreq);
 	if (tevent_req_nterror(req, status)) {
 		/* Ignore errors here, just log it */
-		DEBUG(10, ("query_user_list for domain %s returned %s\n",
+		DEBUG(3, ("query_user_list for domain %s returned: %s\n",
 			   state->gstate->domain->name,
 			   nt_errstr(status)));
-		return;
 	}
 	if (!NT_STATUS_IS_OK(result)) {
 		/* Ignore errors here, just log it */
-		DEBUG(10, ("query_user_list for domain %s returned %s/%s\n",
+		DEBUG(1, ("query_user_list for domain %s failed with: %s/%s\n",
 			   state->gstate->domain->name,
 			   nt_errstr(status), nt_errstr(result)));
-		tevent_req_nterror(req, result);
-		return;
+		state->gstate->num_groups = 0;
 	}
 
 	state->gstate->num_groups = state->next_groups.num_principals;