Index: trunk/core/units/categories/categories_event_handler.php
===================================================================
diff -u -r5036 -r5173
--- trunk/core/units/categories/categories_event_handler.php	(.../categories_event_handler.php)	(revision 5036)
+++ trunk/core/units/categories/categories_event_handler.php	(.../categories_event_handler.php)	(revision 5173)
@@ -63,11 +63,10 @@
 		}
 
 		$object->addFilter('parent_filter', 'ParentId = '.$parent_cat_id);
-
-		$view_perm = 1;
-		$object->addFilter('perm_filter', 'PermId = '.$view_perm);
-		if ( !$this->Application->IsAdmin() )
-		{
+		
+		$object->addFilter('perm_filter', 'PermId = 1'); // check for CATEGORY.VIEW permission
+		if ($this->Application->GetVar('u_id') > 0) { // !$this->Application->IsAdmin() || 
+			// apply permission filters to all users except "root"
 			$groups = explode(',',$this->Application->RecallVar('UserGroups'));
 			foreach ($groups as $group) {
 				$view_filters[] = 'FIND_IN_SET('.$group.', acl) || ((NOT FIND_IN_SET('.$group.',dacl)) AND acl=\'\')';
@@ -205,7 +204,7 @@
 
 		return parent::getPassedID($event);
 	}
-
+	
 	/**
 	 * Rebuilds category cache
 	 *
@@ -233,8 +232,40 @@
 															'*3600*24), 1, 0),
 														%1$s.NewItem
 													)');
-
 	}
+	
+	
+	
+	/**
+	 * Set cache modification mark if needed
+	 *
+	 * @param kEvent $event
+	 */
+	function OnBeforeDeleteFromLive(&$event)
+	{
+		$id = $event->getEventParam('id');
+		if ($id == 0) {
+			// new category -> update chache
+			$this->Application->SetVar('require_cache_update', 1);
+			return ;
+		}
+		
+		// existing category was edited, check if in-cache fields are modified
+		$temp_object =& $event->getObject( Array('skip_autoload' => true) );
+		$temp_object->Load($id);
+		
+		$live_object =& $this->Application->recallObject($event->Prefix.'.-item', null, Array('live_table' => true));
+		$live_object->Load($id);
+		
+		$cached_fields = Array('Name', 'Filename', 'CategoryTemplate', 'ItemTemplate');
+									
+		foreach ($cached_fields as $cached_field) {
+			if ($live_object->GetDBField($cached_field) != $temp_object->GetDBField($cached_field)) {
+				$this->Application->SetVar('require_cache_update', 1);
+				break;
+			}
+		}
+	}
 }
 
 ?>
\ No newline at end of file