Joomla! 2.5.23 is now available,this is a maintenance release for the 2.5 series of the Joomla! CMS.click here.
We are familiar with the implementation of the upgrade and are currently upgrading multiple sites CONTACT US fora free proposal to update your site.
It's extremely important to keep your Joomla installation, and extensions up to date to minimise the risk of your site being compromised, you should also check that you are not using vulnerable extensions by visiting Joomla! Vulnerable Extensions List.
We manage, maintain, and update hundreds of Joomla sites, to discuss your website update and website maintenance needs submit a ticket on our helpdesk and we will get back to you with the available options. SUBMIT TICKET