Index: system.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.module,v
retrieving revision 1.380
diff -u -r1.380 system.module
--- system.module	14 Oct 2006 11:47:12 -0000	1.380
+++ system.module	19 Oct 2006 21:55:04 -0000
@@ -1554,8 +1554,13 @@
       $row[] = array('data' => drupal_render($form['description'][$key]), 'class' => 'description');
       $rows[] = $row;
     }
-    $output .= '<h2>'. t($package) .'</h2>';
-    $output .= theme('table', $header, $rows, array('class' => 'package'));
+    $fieldset = array (
+      '#title' => t($package),
+      '#collapsible' => TRUE,
+      '#collapsed' => TRUE,
+      '#value' => theme('table', $header, $rows, array('class' => 'package'))
+    );
+    $output .= theme('fieldset', $fieldset);
   }
 
   $output .= drupal_render($form);