Here is few feature include in this update:
- Addresses an issue with automatic AirPort connections that use different authentication methods.
- Addresses a display issue that could occur in X11.app running in 256-color mode on an Intel-based Mac.
- Resolves a printing issue that could occur with applications using Rosetta, while logged in as Active Directory User that has an SMB home directory.
- Improves the reliability of OpenGL-based applications on Mac Pro computer with Nvidia graphics cards.
- Includes the Daylight Savings Time Update (released February 15, 2007) which contains the latest worldwide time zone and Daylight Saving Time (DST) rules as of January 8, 2007.
- Adds support for WPA2 encryption in Network Diagnostics.
- Improves validation of disk images.



