Index: branches/5.2.x/core/kernel/utility/formatters/password_formatter.php
===================================================================
--- branches/5.2.x/core/kernel/utility/formatters/password_formatter.php
+++ branches/5.2.x/core/kernel/utility/formatters/password_formatter.php
@@ -208,7 +208,8 @@
 				break;
 
 			case PasswordHashingMethod::MD5_AND_PHPPASS:
-				return $this->_phpPass->hashPassword($this->_md5hash($password, $salt, true));
+				$password_hashed = preg_match('/^[a-f0-9]{32}$/', $password);
+				return $this->_phpPass->hashPassword($this->_md5hash($password, $salt, $password_hashed));
 				break;
 
 			case PasswordHashingMethod::PHPPASS: