diff -up gnome-panel-2.27.4/gnome-panel/panel-menu-items.c.about gnome-panel-2.27.4/gnome-panel/panel-menu-items.c
--- gnome-panel-2.27.4/gnome-panel/panel-menu-items.c.about	2009-07-31 18:29:02.635601324 -0400
+++ gnome-panel-2.27.4/gnome-panel/panel-menu-items.c	2009-07-31 18:30:18.129605780 -0400
@@ -1159,7 +1159,8 @@ panel_desktop_menu_item_append_menu (Gtk
 		add_menu_separator (menu);
 
 	panel_menu_items_append_from_desktop (menu, "gnome-yelp.desktop", NULL);
-	panel_menu_items_append_from_desktop (menu, "gnome-about.desktop", NULL);
+	if (panel_has_desktop_file ("about-this-computer.desktop"))
+		panel_menu_items_append_from_desktop (menu, "about-this-computer.desktop", NULL);
 
 	if (parent->priv->append_lock_logout)
 		panel_menu_items_append_lock_logout (menu);