[Samba] Can't change password change dates with PDBEDIT

[Boaz Bezborodko]

I'm setting up a Samba server using CentOS 4's (RedHat Enterprise Linux)
standard version (v.3.0101411).  I want to be able to force users to
change their password upon first logging in and to have to change them
after a certain period of time (per user, not system-wide).

The problem is that the pdbedit commands don't seem to be registering at
all in the database.  If I enter the following command:
pdbedit --pwd-must-change-time="2010-01-01" --time-format="%Y-%m-%d"

I still get:
Password last set:    Fri, 16 Mar 2007 10:02:06 GMT
Password can change:  Fri, 16 Mar 2007 10:02:06 GMT
Password must change: Mon, 18 Jan 2038 22:14:07 GMT

How do I control login times?

(I'm moving from a Novel Netware server where these kind of
administration tasks were very easy.  I'm disappointed that it is taking
me so long to get this done.)

Boaz