Howto Setup Permissions for Joomla on Plesk with Ubuntu
Most of the howto’s or tutorials we came across about this problem all mention to install suphp and run php as a cgi through it. We weren’t happy with this solution, so we did something different. Basically the problem is: Plesk runs apache as “www-data:www-data” while the users are “username:psacln”. So, uploading via sftp or ftp will work fine, but when you go to install something from the control panel in Joomla, it will be installed as www-data:www-data....