Index: wp-includes/functions.php
===================================================================
--- wp-includes/functions.php	(revision 9728)
+++ wp-includes/functions.php	(working copy)
@@ -2276,6 +2277,7 @@
 <body id="error-page">
 <?php endif; ?>
 	<?php echo $message; ?>
+	<?php if ( strlen($message) < 512) echo str_repeat(' ', 512-strlen($message)); ?>
 </body>
 </html>
 <?php
