Earlier this week, Apple released the second update for Snow Leopard, bringing it to OS X 10.6.2. This update features a security update, as well as a substantial list of bug fixes for Safari, Mail, MobileMe, network file systems, graphics, fonts, Front Row, and much more.
You can download the update by running Software Update, which is found under the Apple button in the upper left corner of your screen (this is the recommended method). You can manually install the update by clicking here.
Of note, this update removes support for Intel Intel Atom processors, disabling “hacked” non-Apple netbooks running OS X. The update fixes a critical issue with guest accounts and the accidental erasure of entire home directories.