Index: source/nsswitch/winbindd_dual.c
===================================================================
--- source/nsswitch/winbindd_dual.c.orig	2008-09-20 12:07:04.000000000 +0530
+++ source/nsswitch/winbindd_dual.c	2008-09-20 16:32:04.000000000 +0530
@@ -299,7 +299,13 @@
 		while (request != NULL) {
 			/* request might be free'd in the continuation */
 			struct winbindd_async_request *next = request->next;
-			request->continuation(request->private_data, False);
+
+            DLIST_REMOVE(child->requests, request);
+            TALLOC_FREE(request->reply_timeout_event);
+            request->response->length = sizeof(struct winbindd_response);
+            request->response->result = WINBINDD_ERROR;
+            request->continuation(request->private_data, False);
+
 			request = next;
 		}
 		return;