[Samba] SambaPasswdMustChange problem

[misty at borkholder.com]

I set my users up with smbldap-tools.  SambaPasswdMustChange is populated
appropriately.  The first time the user is prompted to change their
password, and does so, the value in SambaPasswdMustChange goes to
2147483647 which is basically never.  Can anybody tell me why this might
be happening?  Do I have to set this somewhere in smb.conf?

Thanks,
Misty