Index: branches/5.2.x/core/install/upgrades.php
===================================================================
diff -u -N -r15450 -r15590
--- branches/5.2.x/core/install/upgrades.php	(.../upgrades.php)	(revision 15450)
+++ branches/5.2.x/core/install/upgrades.php	(.../upgrades.php)	(revision 15590)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: upgrades.php 15450 2012-07-16 12:40:55Z alex $
+* @version	$Id: upgrades.php 15590 2012-10-18 15:37:18Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -2295,4 +2295,47 @@
 			// drop RunInterval column
 			$this->Conn->Query('ALTER TABLE ' . $table_name . ' DROP RunInterval');
 		}
+
+		/**
+		 * Update to 5.2.1-B1
+		 *
+		 * @param string $mode when called mode {before, after)
+		 */
+		public function Upgrade_5_2_1_B1($mode)
+		{
+			if ( $mode != 'after' ) {
+				return;
+			}
+
+			$this->_updateUserPasswords();
+		}
+
+		protected function _updateUserPasswords()
+		{
+			$user_table = $this->Application->getUnitOption('u', 'TableName');
+
+			$sql = 'SELECT Password, PortalUserId
+					FROM ' . $user_table . '
+					WHERE PasswordHashingMethod = ' . PasswordHashingMethod::MD5;
+			$user_passwords = $this->Conn->GetColIterator($sql, 'PortalUserId');
+
+			if ( !count($user_passwords) ) {
+				// no users at all or existing users have converted passwords already
+				return;
+			}
+
+			kUtil::setResourceLimit();
+
+			$password_formatter = $this->Application->recallObject('kPasswordFormatter');
+			/* @var $password_formatter kPasswordFormatter */
+
+			foreach ($user_passwords as $user_id => $user_password) {
+				$fields_hash = Array (
+					'Password' => $password_formatter->hashPassword($user_password, '', PasswordHashingMethod::MD5_AND_PHPPASS),
+					'PasswordHashingMethod' => PasswordHashingMethod::MD5_AND_PHPPASS,
+				);
+
+				$this->Conn->doUpdate($fields_hash, TABLE_PREFIX . 'Users', 'PortalUserId = ' . $user_id);
+			}
+		}
 	}
\ No newline at end of file