The Apple Login & Keychain Update is recommended for all Mac OS X 10.5 installations. It addresses issues you may encounter when:
- Logging in with an account originally created in Mac OS X 10.1 or earlier that has a password of 8 or more characters.
- Connecting to some 802.11b/g wireless networks.
- Changing the password of a FileVault-protected account.
- Mac OS X 10.5