samba - Jun 2010 - problems with old and new passwords being accessible

Hey All,
I'm using samba and winbind for user authentication, though I'm seeing a
problem whereby the users are able to still login with their old passwords for
up to 12 hours when they change their password.

Is anyone familiar with why this would be occurring?

Thanks,
Matt Delves
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Matthew Delves
System Administrator
Information Systems
Networks & Infrastructure
University of Ballarat
ph: 03 5327 9732
email: m.delves at ballarat.edu.au