Indeed you were. Here's the spiel:
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
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