Apple today released Mac OS X 10.5.4 Leopard, which is recommended for all users running Mac OS X Leopard. The update fixes and enhances the stability, compatibility and security of the OS. The main applications included in the update are Adobe Creative Suite 3, Airport, iCal, Safari, Spaces and Expose. Apple has patches more than 25 flaws with the latest update, including 13 security fixes. You can download and install the latest update from Apple downloads or via Software Update feature of Mac OS X. Apple has also released security and Safari 3.1.2 updates for Mac OS X Tiger.