Index: branches/5.3.x/core/units/helpers/curl_helper.php
===================================================================
diff -u -N -r16111 -r16124
--- branches/5.3.x/core/units/helpers/curl_helper.php	(.../curl_helper.php)	(revision 16111)
+++ branches/5.3.x/core/units/helpers/curl_helper.php	(.../curl_helper.php)	(revision 16124)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: curl_helper.php 16111 2014-12-07 14:49:01Z alex $
+* @version	$Id: curl_helper.php 16124 2015-01-01 14:06:22Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -208,6 +208,8 @@
 				// don't verify SSL certificates
 				CURLOPT_SSL_VERIFYPEER => false,
 				CURLOPT_SSL_VERIFYHOST => false,
+
+				// Prevents CURL from adding "Expect: 100-continue" header for POST requests.
 				CURLOPT_HTTPHEADER => Array ('Expect:'),
 			);