I've ran the Plesk updater for 7.51, however, PHP does not appear to be updated. RPM reports php-4.3.2-psa.rh9.1 Given: "The PHP Development Team would like to announce the immediate release of PHP 4.3.10 and PHP 5.0.3. These are maintenance releases that in addition to non-critical bug fixes address several very serious security issues. All Users of PHP are strongly encouraged to upgrade to one of these releases as soon as possible." This appears to be an issue.