Index: branches/5.3.x/units/posts/posts_config.php
===================================================================
diff -u -N -r15655 -r15670
--- branches/5.3.x/units/posts/posts_config.php	(.../posts_config.php)	(revision 15655)
+++ branches/5.3.x/units/posts/posts_config.php	(.../posts_config.php)	(revision 15670)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: posts_config.php 15655 2013-01-02 17:24:32Z alex $
+* @version	$Id: posts_config.php 15670 2013-01-17 08:35:40Z alex $
 * @package	In-Bulletin
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -58,7 +58,7 @@
 
 	'CalculatedFields' => Array (
 		'' => Array (
-			'UserName' => 'IF (ISNULL(u.Username), IF (%1$s.CreatedById = ' . USER_ROOT . ', "root", IF (%1$s.CreatedById = ' . USER_GUEST . ', "Guest", "n/a")), u.Username)',
+			'UserName' => 'IF (ISNULL(u.Username), IF (%1$s.CreatedById = ' . USER_ROOT . ', "root", IF (%1$s.CreatedById = ' . USER_GUEST . ', "Guest", "n/a")), IF(u.Username = "", u.Email, u.Username))',
 
 			'AltName' => 'img.AltName',
 			'SameImages' => 'img.SameImages',