Apple has addressed the recent well-publicized security issues involving the Safari "Open safe files after downloading" feature, including changes to Mail, iChat, and the LaunchServices facility.
Now available via Software Update for qualifying systems:
Security Update 2006-001
For Mac OS X 10.3.9 and Mac OS X 10.4.5.
Recommended for all users and improves the security of the following components:
apache_mod_php
automount
Bom
Directory Services
iChat
IPSec
LaunchServices
LibSystem
loginwindow
Mail
rsync
Safari
Syndication
For detailed information on this Update, please visit this website: http://docs.info.apple.com/article.html?artnum=61798
Specific information can be found here.
Also available for direct download: Mac OS X 10.4.5 (PPC), Mac OS X 10.4.5 (Intel), Mac OS X 10.3.9, Mac OS X 10.3.9 Server.
iTunes 6.0.4
With iTunes 6, you can preview, buy, and download over 3,000 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 6.0.4 addresses stability and performance issues related to Front Row.
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.
Also available as a direct download.
iPhoto Update 6.0.2
iPhoto 6.0.2 resolves several minor issues with playing shared slideshows in Front Row.
Also available as a direct download.
Front Row 1.2.1
This Front Row update improves compatibility with iTunes and iPhoto sharing.
Also available as a direct download.