--- sites/all/modules/ajax_comments/ajax_comments.js	2010-06-06 15:39:02.838597000 +0600
+++ sites/all/modules/ajax_comments/ajax_comments_edited.js	2010-06-06 15:41:04.606558000 +0600
@@ -502,6 +502,13 @@ function ajax_comments_update_editors() 
   if(typeof(FCKeditor_OnAfterLinkedFieldUpdate) != 'undefined'){
     FCKeditor_OnAfterLinkedFieldUpdate(FCKeditorAPI.GetInstance('edit-comment'));
   }
+
+  // Update CKEditor 3.x
+  if (CKEDITOR.instances['edit-comment']) {
+    CKEDITOR.remove(CKEDITOR.instances['edit-comment']); // remove from CKEDITOR
+    $('#cke_edit-comment').remove(); // remove form DOM (no duplicates)
+  }
+  CKEDITOR.replace('edit-comment'); // insert new
 }