Apple updates main OS and fixes 15 security holes

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.