Index: modules/simpletest/drupal_web_test_case.php
===================================================================
RCS file: /cvs/drupal/drupal/modules/simpletest/drupal_web_test_case.php,v
retrieving revision 1.73
diff -u -p -r1.73 drupal_web_test_case.php
--- modules/simpletest/drupal_web_test_case.php	11 Dec 2008 20:35:37 -0000	1.73
+++ modules/simpletest/drupal_web_test_case.php	13 Dec 2008 07:48:34 -0000
@@ -1754,7 +1754,7 @@ class DrupalWebTestCase {
               }
             }
           }
-          elseif (isset($field[0]) && $field[0] == $value) {
+          elseif ((string) $field == $value) {
             // Text area with correct text.
             $found = TRUE;
           }