We are currently cleaning up all expired accounts from Plesk5 and Plesk6 servers due to the necessary server migration.
Just a reminder to all users:
Be sure you keep any CMS/forum/blog scripts up-to-date to avoid files being injected into your sites.
Our new servers offer PHP 5.2, 5.3, and 5.4 so all scripts should be compatible. Eventually, we will be removing 5.2 support since that is past its end of life by the PHP group.