We use the GPO via Zen to set a password protected screen saver. We
have ONE user where the lockout will not accept her password to unlock.
She can reboot and her password will allow her to login, but not
unlock. If I change her password while her machine is locked, the new
password will allow her to unlock her machine. Not sure why.

NW 6.5 sp4a
Zen 6.5 sp2