Apple has issued the latest application stability and security update to its main operating system, which includes...
at least 15 security fixes.
The Mac OS X 10.5.6 Combo Update is for all users running the Mac OS X Leopard platform. It "includes general operating system fixes that enhance the stability, compatibility and security of your Mac", according to Apple.
A number of the security holes Apple is blocking with the update allow remote hackers to take control of users' systems.