samba - Feb 2009 - Can't log in as same user on different domain

Hello,

Moved user accounts from one domain to another and now can't log in to
workstations with the same user name that was used in the previous domain.
If we log in as a user who has never logged in to the workstation, that
user can log in under the new domain.

Is there some user info cached in winbind that prevents the identical user
name from logging in under a different domain? Any way to fix this?

Many thanks,

James