Apple has posted Mac OS X 10.6.4, which is available through the Software Update system preference. Apple recommends the update for everyone running Snow Leopard.

Fixes corrects problems that caused the keyboard or trackpad to become unresponsive; prevented Creative Suite 3 apps from opening; copying, renaming or deleting files on SMB file servers; improves reliability of Virtual Private Network (VPN) connections; fixes an issue related to DVD player’s Good Quality deinterlacing; fixes an iPhoto and Aperture full screen view editing issue; and improves compatibility with some braille displays.

More details are available from Apple’s Web site.