Apple today released Login & Keychain Update 1.0 which is recommended for all users running Mac OS X Leopard.

Login & Keychain Update 1.0 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.

Login & Keychain Update 1.0 is available via Software Update and also as a standalone installer.

More info and download link (10MB) here.

[Thanks to MacDailyNews Reader "Too Hot!" for the heads up.]