Index: trunk/kernel/action.php
===================================================================
diff -u -N -r3145 -r3162
--- trunk/kernel/action.php	(.../action.php)	(revision 3145)
+++ trunk/kernel/action.php	(.../action.php)	(revision 3162)
@@ -821,8 +821,17 @@
          {
 	         $original_cats = new clsCatList();
 	         $original_cat = $original_cats->GetItemByField('CategoryId', GetVar('CategoryId'));
-	         if( $original_cat->Get('Name') != stripslashes($_POST['cat_name'] )) 
-	         	$objSession->SetVariable('PermCache_UpdateRequired', 1);
+	         
+	         $match_fields = Array('Name' => 'cat_name', 'Filename' => 'filename');
+	         foreach ($match_fields as $db_field => $submit_field)
+	         {
+	         	if( $original_cat->Get($db_field) != stripslashes( GetVar($submit_field) ) )
+	         	{
+	         		$objSession->SetVariable('PermCache_UpdateRequired', 1);
+	         		break;
+	         	}
+	         }
+	         
 	         unset($original_cat, $original_cats);
          }
          else