Index: modules/overlay/overlay.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/overlay/overlay.module,v
retrieving revision 1.20
diff -u -r1.20 overlay.module
--- modules/overlay/overlay.module	8 Jun 2010 05:16:29 -0000	1.20
+++ modules/overlay/overlay.module	9 Jun 2010 08:57:32 -0000
@@ -282,8 +282,6 @@
   if (overlay_get_mode() == 'child') {
     // Add overlay class, so themes can react to being displayed in the overlay.
     $variables['classes_array'][] = 'overlay';
-    // Do not include site name or slogan in the overlay title.
-    $variables['head_title'] = drupal_get_title();
   }
 }