Apple has released Mac OS X 10.5.8, an update to their Mac OS X Leopard operating system.
The 10.5.8 Update is recommended for all users running Mac OS X Leopard and includes general operating system fixes that enhance the stability, compatibility and security of your Mac, as well as specific fixes for: - compatibility and reliability issues when joining AirPort networks. - an issue that could cause some monitor resolutions to no longer appear in Displays System Preferences. - issues that may affect Bluetooth reliability.