Apple released the following updates:
AirPort Extreme Update 2008-002: improves the reliability of AirPort connections.
iLife Support 8.3: improves overall stability and addresses a number of other minor issues.
iPhoto 7.1.4: addresses general compatibility issues, improves overall stability, and addresses a number of other minor issues. Also adds new postcards themes.
iMovie 7.1.4: addresses general compatibility issues, improves overall stability, and addresses a number of other minor issues.
iWeb 2.0.4: addresses general compatibility issues, improves overall stability, and addresses a number of other minor issues.
Updates can reached from the Apple Software Updater or the Apple Support Downloads page.