diff -r c433348f3628 -r 31c23016ab62 includes/clientside/tinymce/plugins/table/editor_plugin_src.js
--- a/includes/clientside/tinymce/plugins/table/editor_plugin_src.js	Fri Feb 22 12:51:53 2008 -0500
+++ b/includes/clientside/tinymce/plugins/table/editor_plugin_src.js	Sun Feb 24 12:50:52 2008 -0500
@@ -1,5 +1,5 @@
 /**
- * $Id: editor_plugin_src.js 520 2008-01-07 16:30:32Z spocke $
+ * $Id: editor_plugin_src.js 612 2008-02-19 12:33:44Z spocke $
  *
  * @author Moxiecode
  * @copyright Copyright © 2004-2008, Moxiecode Systems AB, All rights reserved.
@@ -74,6 +74,12 @@
 				}
 			});
 
+			// Add undo level when new rows are created using the tab key
+			ed.onKeyDown.add(function(ed, e) {
+				if (e.keyCode == 9 && ed.dom.getParent(ed.selection.getNode(), 'TABLE'))
+					ed.undoManager.add();
+			});
+
 			ed.onNodeChange.add(function(ed, cm, n) {
 				var p = ed.dom.getParent(n, 'td,th,caption');