Safari 5.0.5 is available via Software Update or direct from Apple. It includes the latest security updates for the browser, which runs on Mac OS X 10.6.5, Mac OS X 10.5.8, Windows XP, Vista and Windows 7.
A number of security updates for Snow Leopard and Leopard are also available. They are recommended for all users, and links to them are included below:
Snow Leopard Security Update 2011-002
Leopard - Client Security Update 2011-002
Leopard - Server Security Update 2011-002
Finally, along with the newly released iOS 4.3.2, which also arrived on Thursday, Apple has also issued an update for its Xcode development software. Users can download Xcode 4.0.2 through the Mac App Store, where it sells for $4.99.