Index: includes/form.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/form.inc,v
retrieving revision 1.351
diff -u -p -r1.351 form.inc
--- includes/form.inc	18 Jul 2009 02:41:05 -0000	1.351
+++ includes/form.inc	19 Jul 2009 06:20:32 -0000
@@ -1609,7 +1609,7 @@ function theme_radio($element) {
   $output .= 'value="' . $element['#return_value'] . '" ';
   $output .= (check_plain($element['#value']) == $element['#return_value']) ? ' checked="checked" ' : ' ';
   $output .= drupal_attributes($element['#attributes']) . ' />';
-  if (!is_null($element['#title'])) {
+  if (!empty($element['#title'])) {
     $output = '<label class="option" for="' . $element['#id'] . '">' . $output . ' ' . $element['#title'] . '</label>';
   }
 
@@ -2071,7 +2071,7 @@ function theme_checkbox($element) {
   $checkbox .= $element['#value'] ? ' checked="checked" ' : ' ';
   $checkbox .= drupal_attributes($element['#attributes']) . ' />';
 
-  if (!is_null($element['#title'])) {
+  if (!empty($element['#title'])) {
     $checkbox = '<label class="option" for="' . $element['#id'] . '">' . $checkbox . ' ' . $element['#title'] . '</label>';
   }

Index: modules/system/system.admin.inc
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.admin.inc,v
retrieving revision 1.197
diff -u -p -r1.197 system.admin.inc
--- modules/system/system.admin.inc	26 Aug 2009 10:53:45 -0000	1.197
+++ modules/system/system.admin.inc	26 Aug 2009 13:56:01 -0000
@@ -799,7 +799,6 @@ function _system_modules_build_row($info
   if ($compatible) {
     $form['enable'] = array(
       '#type' => 'checkbox',
-      '#title' => t('Enable'),
       '#default_value' => $extra['enabled'],
     );
     if ($extra['disabled']) {
@@ -2152,7 +2151,6 @@ function theme_system_modules_fieldset($
     // Stick it into $module for easier accessing.
     $module = $form[$key];
     $row = array();
-    unset($module['enable']['#title']);
     $row[] = array('class' => array('checkbox'), 'data' => drupal_render($module['enable']));
     $label = '<label';
     if (isset($module['enable']['#id'])) {