Index: branches/5.2.x/core/install/upgrades.php
===================================================================
diff -u -N -r15447 -r15448
--- branches/5.2.x/core/install/upgrades.php	(.../upgrades.php)	(revision 15447)
+++ branches/5.2.x/core/install/upgrades.php	(.../upgrades.php)	(revision 15448)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: upgrades.php 15447 2012-07-16 11:10:32Z alex $
+* @version	$Id: upgrades.php 15448 2012-07-16 11:17:19Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -2230,5 +2230,11 @@
 
 				$this->Conn->doUpdate($fields_hash, $table_name, 'CategoryId = ' . $category_data['CategoryId']);
 			}
+
+			$rebuild_mode = $this->Application->ConfigValue('QuickCategoryPermissionRebuild') ? CategoryPermissionRebuild::SILENT : CategoryPermissionRebuild::AUTOMATIC;
+			$this->Application->SetConfigValue('CategoryPermissionRebuildMode', $rebuild_mode);
+
+			$sql = 'DELETE FROM ' . TABLE_PREFIX . 'SystemSettings WHERE VariableName = "QuickCategoryPermissionRebuild"';
+			$this->Conn->Query($sql);
 		}
 	}
\ No newline at end of file