WP Menus – ends to white screen when saving.

Hello all,

URL : http://www.zeesonline.co.uk/

Need help. I am facing an error when saving the Menu. It ends up to a white screen or sometime 500 internal server error.

– – I was trying to create a mega-menu with lots of items and sub-items. I believe it is something related to Limit of items in the menu.
– – We encountered this problem – when we were adding items to Ubermenu plugin. But after deactivating the plugin the problem still persists.

– – We were on an older version then, we updated the wordpress but still the problem is same.

– – I searched over the internet, and found that it may related to servers capability to process $post requests. So I created a PHP.ini file, with variables:

<?php

suhosin.post.max_vars = 5000;
suhosin.request.max_vars = 5000;

max_input_vars = 5000;

max_input_time = 600;
max_execution = 600; 

?>

A PHP test at: http://www.zeesonline.co.uk/phpinfo.php
Confirms that max_vars values are being changed.

But the problem is not yet resolved.

Please help.

Thanks,
~Ankit