Joomla donot show the menu after upgrading php and mysql to 5.3 and 5.1 resply.
Solution :
http://admin.webhostingdevelopment.com/viewtopic.php?f=64&t=67
Open
vi modules/mod_mainmenu/helper.php
from within the installation directory
Replace
function buildXML(&$params) with
function buildXML($params)