Security Update 2006-008 is recommended for all users and improves the security of the following components:

Quartz Composer
QuickTime for Java

For detailed information on this update, please visit this website: http://docs.info.apple.com/article.html?artnum=61798

Security Update 2006-007 is recommended for all users and improves the security of the following components:

AirPort
ATS
CFNetwork
Finder
Font Book
Font Importer
Installer
OpenSSL
PHP
PPP
Samba
Security Framework
VPN
WebKit
gnuzip
perl

For detailed information on this Update, please visit this website: http://docs.info.apple.com/article.html?artnum=61798

This update addresses several issues in the X11 for Mac OS X package, enabling it to better handle:

GLX stereo visuals
offscreen rendering to GLX Pbuffers and Pixmaps
To tell X11 to take advantage of stereo visuals, enter:

$ defaults write com.apple.x11 enable_stereo -bool true
This update also addresses font issues present in X11 1.1.2, and is recommended for all users.

With iTunes 7 and the new iTunes Store, preview and purchase high-quality hit movies plus new and classic games designed exclusively for the Fifth Generation iPod. Flip through your collection by album cover with Cover Flow, protect your iTunes library by backing up to CDs or DVDs, and much more.
iTunes 7.0.2 adds support for the Second Generation iPod shuffle and addresses a variety of stability and performance issues found in iTunes 7 and 7.0.1.

The 10.4.8 Update is recommended for all users and includes general operating system fixes, as well as specific fixes for the following applications and technologies:

- connecting to wireless networks using the EAP-FAST protocol
- Apple USB modem reliability
- using OpenType fonts in Microsoft Word
- compatibility with 3rd party USB hubs
- scanner performance
- RAW camera support
- printing documents with Asian language names
- performance of the Translation widget
- broadband network performance
- security updates

For detailed information on this Update, please visit this website: http://www.info.apple.com/kbnum/n304200.

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

Security Update 2006-004 is recommended for all users and improves the security of the following components.

AFP Server
Bluetooth
Bom
DHCP
dyld
fetchmail
gnuzip
ImageIO
LaunchServices
OpenSSH
telnet
WebKit

For detailed information on this Update, please visit this website: http://docs.info.apple.com/article.html?artnum=61798.