Index: modules/search/search-block-form.tpl.php
===================================================================
RCS file: /cvs/drupal/drupal/modules/search/search-block-form.tpl.php,v
retrieving revision 1.3
diff -u -p -r1.3 search-block-form.tpl.php
--- modules/search/search-block-form.tpl.php	30 Dec 2008 16:43:18 -0000	1.3
+++ modules/search/search-block-form.tpl.php	3 Jun 2010 00:40:43 -0000
@@ -34,5 +34,8 @@
  */
 ?>
 <div class="container-inline">
+  <?php if (empty($variables['form']['#block']->title)) : ?>
+    <h2 class="element-invisible"><?php print t('Search form'); ?></h2>
+  <?php endif; ?>
   <?php print $search_form; ?>
 </div>