diff -r 5e7a0fedabdf -r 877f952ae2bd web/lib/Zend/Http/Response.php
--- a/web/lib/Zend/Http/Response.php	Thu Mar 21 17:31:31 2013 +0100
+++ b/web/lib/Zend/Http/Response.php	Thu Mar 21 19:50:53 2013 +0100
@@ -16,8 +16,8 @@
  * @category   Zend
  * @package    Zend_Http
  * @subpackage Response
- * @version    $Id: Response.php 22810 2010-08-08 10:29:09Z shahar $
- * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @version    $Id: Response.php 25081 2012-11-06 20:59:47Z rob $
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 
@@ -28,7 +28,7 @@
  *
  * @package    Zend_Http
  * @subpackage Response
- * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Http_Response
@@ -165,7 +165,7 @@
                     require_once 'Zend/Http/Exception.php';
                     throw new Zend_Http_Exception("'{$value}' is not a valid HTTP header");
                 }
-                
+
                 $name  = trim($header[0]);
                 $value = trim($header[1]);
             }
@@ -641,7 +641,7 @@
          * @link http://framework.zend.com/issues/browse/ZF-6040
          */
         $zlibHeader = unpack('n', substr($body, 0, 2));
-        if ($zlibHeader[1] % 31 == 0) {
+        if ($zlibHeader[1] % 31 == 0 && ord($body[0]) == 0x78 && in_array(ord($body[1]), array(0x01, 0x5e, 0x9c, 0xda))) {
             return gzuncompress($body);
         } else {
             return gzinflate($body);