Apple on Friday evening released Mac OS X 10.3.9, likely the final update to its Mac OS X 10.3 "Panther" operating system. According to Apple, the 10.3.9 Update, recommended for all users, delivers overall improved compatibility and reliability for Mac OS X v10.3 "Panther", including improvements to file sharing and directory services reliability for mixed Mac and PC networks; Mail, Safari and Stickies application reliability; compatibility for third-party applications and devices; and previous standalone security updates. It is available via the Software Update Control Panel.