Index: modules/update/update.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/update/update.module,v
retrieving revision 1.70
diff -u -p -r1.70 update.module
--- modules/update/update.module	6 Oct 2010 13:36:30 -0000	1.70
+++ modules/update/update.module	4 Nov 2010 23:13:09 -0000
@@ -295,6 +295,7 @@ function update_cron() {
     // configured notifications about the new status.
     update_refresh();
     _update_cron_notify();
+    variable_set('update_last_check', time());
   }
   else {
     // Otherwise, see if any individual projects are now stale or still