Index: units/categories/categories_event_handler.php
===================================================================
--- units/categories/categories_event_handler.php	(revision 15085)
+++ units/categories/categories_event_handler.php	(working copy)
@@ -1038,7 +1038,7 @@
 		{
 			if ( $this->Application->CheckPermission('SYSTEM_ACCESS.READONLY', 1) ) {
 				$event->status = kEvent::erFAIL;
-				return ;
+				return;
 			}
 
 			$to_delete = Array ();
@@ -1056,15 +1056,19 @@
 
 				foreach ($ids as $id) {
 					$cat->Load($id);
+
 					if ( preg_match('/^' . preg_quote($rb->GetDBField('ParentPath'), '/') . '/', $cat->GetDBField('ParentPath')) ) {
+						// already in "Recycle Bin" -> delete for real
 						$to_delete[] = $id;
 						continue;
 					}
+
+					// just move into "Recycle Bin" category
 					$cat->SetDBField('ParentId', $recycle_bin);
 					$cat->Update();
 				}
+
 				$ids = $to_delete;
-				$event->redirect = 'categories/cache_updater';
 			}
 
 			$event->setEventParam('ids', $ids);
@@ -1079,10 +1083,10 @@
 					$recursive_helper->DeleteCategory($id, $event->Prefix);
 				}
 			}
+
 			$this->clearSelectedIDs($event);
 
-			$this->Application->StoreVar('RefreshStructureTree', 1);
-			$this->_resetMenuCache();
+			$this->_ensurePermCacheRebuild($event);
 		}
 
 		/**
@@ -1229,20 +1233,32 @@
 			}
 
 			if ( $clipboard_data['cut'] || $clipboard_data['copy'] ) {
-				// rebuild with progress bar
-				if ( $this->Application->ConfigValue('QuickCategoryPermissionRebuild') ) {
-					$updater =& $this->Application->makeClass('kPermCacheUpdater');
-					/* @var $updater kPermCacheUpdater */
+				$this->_ensurePermCacheRebuild($event);
+			}
+		}
 
-					$updater->OneStepRun();
-				}
-				else {
-					$event->redirect = 'categories/cache_updater';
-				}
+		/**
+		 * Ensures, that category permission cache is rebuild when category is added/edited/deleted
+		 *
+		 * @param kEvent $event
+		 * @return void
+		 * @access protected
+		 */
+		protected function _ensurePermCacheRebuild(&$event)
+		{
+			if ( $this->Application->ConfigValue('QuickCategoryPermissionRebuild') ) {
+				$updater =& $this->Application->makeClass('kPermCacheUpdater');
+				/* @var $updater kPermCacheUpdater */
 
-				$this->_resetMenuCache();
-				$this->Application->StoreVar('RefreshStructureTree', 1);
+				$updater->OneStepRun();
 			}
+			else {
+				// rebuild with progress bar
+				$event->redirect = 'categories/cache_updater';
+			}
+
+			$this->_resetMenuCache();
+			$this->Application->StoreVar('RefreshStructureTree', 1);
 		}
 
 		/**
Index: units/categories/categories_tag_processor.php
===================================================================
--- units/categories/categories_tag_processor.php	(revision 15085)
+++ units/categories/categories_tag_processor.php	(working copy)
@@ -128,13 +128,27 @@
 
 		$ci_table = $this->Application->getUnitOption('ci', 'TableName');
 
+		$module_prefixes = implode(',', $this->Conn->qstrArray($this->_getModulePrefixes()));
+
 		$sql = 'SELECT COUNT(*)
 				FROM ' . $object->TableName . ' c
-				LEFT JOIN ' . $ci_table . ' ci ON c.CategoryId = ci.CategoryId
-				WHERE (c.TreeLeft BETWEEN ' . $object->GetDBField('TreeLeft') . ' AND ' . $object->GetDBField('TreeRight') . ') AND NOT (ci.CategoryId IS NULL)';
+				JOIN ' . $ci_table . ' ci ON c.CategoryId = ci.CategoryId
+				WHERE (c.TreeLeft BETWEEN ' . $object->GetDBField('TreeLeft') . ' AND ' . $object->GetDBField('TreeRight') . ') AND (ci.ItemPrefix IN (' . $module_prefixes . '))';
+
 		return $this->Conn->GetOne($sql);
 	}
 
+	function _getModulePrefixes()
+	{
+		$ret = Array ();
+
+		foreach ($this->Application->ModuleInfo as $module_info) {
+			$ret[] = $module_info['Var'];
+		}
+
+		return array_unique($ret);
+	}
+
 	function ListCategories($params)
 	{
 		return $this->PrintList2($params);