updated 10:10 pm EDT, Mon September 15, 2008
Security Update 2008-006
Apple on Monday unveiled Security Update 2008-006, detailing the various security fixes patched between it and the Mac OS X 10.5.5 update. The updates both resolve a vast number of issues, mostly relating to the remote execution of arbitrary code, many issues resolved were related to performance and password security. Several vulnerabilities could have allowed malicious users to gain access to a list of authenticated users, or to change the password of an unattended station through the login screen.
The updates address almost 30 issues, ranging from video, login, Time Machine, System Preferences, and other system-essential services. A complete listing can be seen at Apple's website.