If you get this message after installing Joomla 3.x ,
"Your host needs to use PHP 5.3.1 or higher to run this version of Joomla",
|PHP 5.3 needs to be enabled.
On our servers PHP 5.3 can be enabled by putting this directive at the top of the .htaccess file in Joomla root.
AddType application/x-httpd-php53 .php