Apple today released Mac OS X 10.6.4, the fourth maintenance update for Snow Leopard, via Software Update. The update offers a number of fixes implemented since the release of Mac OS X 10.6.3 in late March

The 10.6.4 Update is recommended for all users running Mac OS X Snow Leopard. It includes Safari 5 and general operating system fixes that enhance the stability, compatibility, and security of your Mac, including fixes that:

- resolve an issue that causes the keyboard or trackpad to become unresponsive

- resolve an issue that may prevent some Adobe Creative Suite 3 applications from opening

- address issues copying, renaming, or deleting files on SMB file servers

- improve reliability of VPN connections

- resolve a playback issue in DVD Player when using Good Quality deinterlacing

- resolve an issue editing photos with iPhoto or Aperture in full screen view

- improve compatibility with some braille displays

For detailed information on this update, please visit this website: http://support.apple.com/kb/HT4150.

For information on the security content of this update, please visit: http://support.apple.com/kb/HT1222.

Just yesterday, Apple seeded Build 10F569 of Mac OS X 10.6.4 to developers.

- Mac OS X v10.6.4 Update (607.21 MB)

- Mac OS X v10.6.4 Update (Combo) (887.37 MB)

- Mac OS X Server v10.6.4 Update (615.60 MB)

- Mac OS X Server v10.6.4 Update (Combo) (1.05 GB)

Apple also released a pair of Mac OS X 10.6.4 updates specifically for the company's new Mac mini released earlier today.

- Mac OS X v10.6.4 Update Mac mini (Mid 2010) (403.38 MB)

- Mac OS X Server v10.6.4 Update Mac mini (Mid 2010) (411.72 MB)

Finally, Apple released Security Update 2010-004 for users on Mac OS X 10.5 Leopard.

- Security Update 2010-004 (Leopard-Client) (222 MB)

- Security Update 2010-004 (Leopard-Server) (380.29 MB)