‘ERROR’ tab in navigation

http://aroder.blogspot.com/2008/10/error-tab-in-navigation.html

http://blogs.msdn.com/ecm/archive/2006/12/02/customizing-the-wss-3-0-moss-2007-menu-control-mossmenu-source-code-released.aspx

http://www.sharepoint-tips.com/2007/09/wrokaround-error-in-navigation-when.html

http://sjoere.blogspot.com/2008/03/fixing-navigation-error-related-to.html

http://social.msdn.microsoft.com/Forums/en-US/sharepointcustomization/thread/1eee6b1d-cd7a-431a-9dbe-f9d746bc0a1a/

http://blogs.officezealot.com/legault/archive/2004/08/08/2238.aspx

http://www.sharepointu.com/forums/t/411.aspx

http://groups.google.com/group/microsoft.public.sharepoint.windowsservices/browse_thread/thread/2d75eb7aa1906e97/3c30fa039ea9ebfc

http://social.msdn.microsoft.com/Forums/en-US/sharepointcustomization/thread/6a89c658-ab19-41a4-9875-8ff7c4d87c6a/

http://weblogs.asp.net/soever/archive/2006/05/31/SharePoint-2007-navigation-dissected-_1320_-part-1.aspx