--- source/nsswitch/pam_winbind.c.bak	2009-04-03 17:17:34.000000000 +0700
+++ source/nsswitch/pam_winbind.c	2009-04-03 17:17:35.000000000 +0700
@@ -2406,6 +2406,7 @@
 						     user, "wbcLogoffUser");
 		wbcFreeMemory(error);
 		wbcFreeMemory(logoff.blobs);
+                logoff.blobs = NULL;

 		if (!WBC_ERROR_IS_OK(wbc_status)) {
 			_pam_log(ctx, LOG_INFO,