Login & Keychain Update 1.0
Leopard users, you have your first OS update waiting for you. The Login & Keychain Update 1.0 fixes a couple of issues with logging in and Keychain (shocking, yes?). According to the Apple documentation it corrects issues with the following, and I quote:
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.
[via Daring Fireball]