Index: branches/unlabeled/unlabeled-1.8.2/core/units/categories/cache_updater.php
===================================================================
diff -u -r7025 -r7057
--- branches/unlabeled/unlabeled-1.8.2/core/units/categories/cache_updater.php	(.../cache_updater.php)	(revision 7025)
+++ branches/unlabeled/unlabeled-1.8.2/core/units/categories/cache_updater.php	(.../cache_updater.php)	(revision 7057)
@@ -139,12 +139,17 @@
 	var $primaryLanguageId = 0;
 	var $languageCount = 0;
 	var $root_prefixes = Array();
+	var $StrictPath = false;
 
 	function Init($prefix, $special, $event_params = null)
 	{
 		parent::Init($prefix, $special, $event_params);
 
 		$continuing = isset($event_params['continue']) ? $event_params['continue'] : 1;
+		$this->StrictPath = isset($event_params['strict_path']) ? $event_params['strict_path'] : false;
+		if ($this->StrictPath && !is_array($this->StrictPath)) {
+			$this->StrictPath = explode('|', trim($this->StrictPath, '|'));
+		}
 
 		// cache widely used values to speed up process: begin
 		$ml_helper =& $this->Application->recallObject('kMultiLanguageHelper');
@@ -171,6 +176,9 @@
 	{
 		$this->Stack =& new clsRecursionStack();
 		$sql = 'DELETE FROM '.TABLE_PREFIX.'PermCache';
+		if ($this->StrictPath) {
+			$sql .= ' WHERE CategoryId IN ('.implode(',',$this->StrictPath).')';
+		}
 		$this->Conn->Query($sql);
 		$this->initData();
 	}
@@ -257,6 +265,13 @@
 
 		// if we have more children
 		if (isset($data['children'][$data['current_child']])) {
+			if ($this->StrictPath) {
+				while ( isset($data['children'][ $data['current_child'] ]) && !in_array($data['children'][ $data['current_child'] ], $this->StrictPath) ) {
+					$data['current_child']++;
+					continue;
+				}
+				if (!isset($data['children'][ $data['current_child'] ])) return false; //error
+			}
 			$next_data = Array();
 			$next_data['titles']			=	$data['titles'];
 			$next_data['parent_path']		=	$data['parent_path'];
@@ -368,12 +383,12 @@
 			}
 		}
 	}
-	
+
 	/**
 	 * Rebuild all cache in one step
 	 *
 	 */
-	function OneStepRun()
+	function OneStepRun($path='')
 	{
 		$needs_more = true;
 		while ($needs_more) {