The Joomla Project has just announced the immediate availability of Joomla 2.5.3. This is a security release and you should upgrade your site immediately. All versions of +Joomla! 1.6, 1.7 and 2.5 are affected. The update process is very simple, and complete instructions are available here. You can easily update your site from 2.5.x to this latest version using the update function in the Joomla administrator The best way of updating your site from 2.5.x is to use the built-in upgrade function...