--- install.php	2008-09-28 13:59:53.000000000 +0200
+++ install.php	2008-09-28 13:56:43.000000000 +0200
@@ -927,6 +927,9 @@ More details about installing Drupal are
     if (!$default_exists) {
       drupal_set_message(st('Please make sure that %default-file exists.', array('%default-file' => $default_settings_file)), 'error');
     }
+    elseif (md5_file($default_settings_file) != '6636f4d07cfb78d4bd0e2d7194f37c26') {
+      drupal_set_message(st('Please ensure that %default-file is not modified in any way from the orginal download.', array('%default-file' => $default_settings_file)), 'error');
+    }
   }
 
   // Check the other requirements.