Release Notes: This release changes the PHP requirement to PHP 5.2.3. It drops support for MySQL 4.1 as a database backend and for Internet Explorer 6 as supported browser. It adds a completely new HTML5 powered default layout and administration backend, configurable search relevance functionality, and automatic translations with the Google Translate API. It adds Twitter, Facebook, and Delicious support. All comment functionality is now based on AJAX, and an attachment administration frontend, basic authentication support for LDAP groups, and basic support for HTML5 microdata has been added.