About Mac OS X 10.5.1 Update
Add a new Mac to your Mac. Mac OS X v10.5 Leopard is packed with over 300 new features, installs easily, and works with the software and accessories you already have.

Learn more about Mac OS X.

What’s New in this Version
The 10.5.1 Update is recommended for all users running Mac OS X Leopard and includes general operating system fixes that enhance the stability, compatibility and security of your Mac.

Mac OS X 10.5.1 Update SHA-1 Digest:
MacOSXUpd10.5.1.dmg=
fb4ba4e5a0a7db7e04b3c93bb10115017cbea986

For explanation of what a SHA-1 digest is, please visit this website: http://docs.info.apple.com/article.html?artnum=75510

For detailed information on this update, please visit this website: http://docs.info.apple.com/article.html?artnum=306907

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