Index: user.admin.inc
===================================================================
RCS file: /cvs/drupal/drupal/modules/user/user.admin.inc,v
retrieving revision 1.64
diff -u -r1.64 user.admin.inc
--- user.admin.inc	12 Jul 2009 08:36:35 -0000	1.64
+++ user.admin.inc	19 Jul 2009 12:29:41 -0000
@@ -189,7 +189,7 @@
     }
     asort($users_roles);
     $form['roles'][$account->uid][0] = array('#markup' => theme('item_list', $users_roles));
-    $form['member_for'][$account->uid] = array('#markup' => format_interval(REQUEST_TIME - $account->created));
+    $form['member_since'][$account->uid] = array('#markup' => check_plain(strftime('%B %Y', $account->created));
     $form['last_access'][$account->uid] =  array('#markup' => $account->access ? t('@time ago', array('@time' => format_interval(REQUEST_TIME - $account->access))) : t('never'));
     $form['operations'][$account->uid] = array('#markup' => l(t('edit'), "user/$account->uid/edit", array('query' => $destination)));
   }
@@ -843,7 +843,7 @@
         drupal_render($form['name'][$key]),
         drupal_render($form['status'][$key]),
         drupal_render($form['roles'][$key]),
-        drupal_render($form['member_for'][$key]),
+        drupal_render($form['member_since'][$key]),
         drupal_render($form['last_access'][$key]),
         drupal_render($form['operations'][$key]),
       );