Here's a catch-up of the software updates we missed during our break:

iDVD Update 6.0.1 - 5.3MB
This update to iDVD 6 resolves issues with integration with the other iLife applications, importing of legacy projects and some theme related issues. It also addresses a number of other minor issues.

iPhoto Update - 6.0.1 - 13.7MB
This update to iPhoto resolves issues with photocasting, viewing thumbnails in large libraries, and ordering cards, calendars and books. It also addresses a number of other minor issues.

iMovie HD Update - 6.0.1 - 52.6MB
This update to iMovie HD 6 resolves issues with Ken Burns rendering performance, Scrubber Bar editing performance and theme image quality. It also addresses a number of other minor issues.
iWeb Update - 1.0.1 - 19.1MB
This update to iWeb 1.0 addresses issues related to publishing and blogs. It also addresses a number of other minor issues.

iTunes - 6.0.3 - 18.7MB
With iTunes 6, you can preview, buy, and download over 2,000 music videos and hit TV shows on the iTunes Music Store and sync your music and purchased videos with iPod to enjoy on the go. To watch purchased videos, you must have QuickTime 7.0.3 or later and Mac OS X 10.3.9 or later.
iTunes 6.0.3 includes stability and performance improvements over iTunes 6.0.2.
Note: After purchasing music from the iTunes Music Store with iTunes 6 or later, you will also need to upgrade your other computers that purchase music from the iTunes Music Store to the latest version of iTunes.

Mac OS X Update (PowerPC) - 10.4.5 - 6.4MB
The 10.4.5 Update is recommended for all users and includes general operating system fixes, as well as specific fixes for the following applications and technologies:
- iChat video conferencing?- Safari rendering of web pages?- usability of Dashboard and widgets?- viewing of QuickTime streaming media behind a firewall?- printing to some Epson printer models?- iDisk and Portable Home Directory syncing?- time zone and daylight savings for 2006 and 2007?- VPN connections to Cisco servers when using NAT?- compatibility with third party applications and devices?- previous standalone security updates

For detailed information on this Update, please visit this website: http://www.info.apple.com/kbnum/n303179.
For detailed information on Security Updates, please visit this website: http://www.info.apple.com/kbnum/n61798.