samba - Apr 2008 - tdb_fetch_uint32 failed and create_builtin_administrators failed

Hello,

I've build the latest samba version(3.0.28a) as shown below on my
NSLU2 running debian etch.
./autogen.sh
./configure --with-logfilebase=/usr/local/samba/log
make
make install

That worked without any error messages and I start samba as shown below:
/usr/local/samba/sbin/smbd -D
/usr/local/samba/sbin/winbindd -B
/usr/local/samba/sbin/nmbd -D

So far it seems to work but I found some error messages in the logs:

/usr/local/samba/log/log.smbd:
[2008/04/19 12:21:48, 0] smbd/server.c:main(944)
  smbd version 3.0.28a started.
  Copyright Andrew Tridgell and the Samba Team 1992-2008
[2008/04/19 12:21:51, 1] lib/account_pol.c:account_policy_get(286)
  account_policy_get: tdb_fetch_uint32 failed for field 1 (min password length),
returning 0
[2008/04/19 12:21:51, 1] lib/account_pol.c:account_policy_get(286)
  account_policy_get: tdb_fetch_uint32 failed for field 2 (password history),
returning 0
.......
And after the first connection from a client:
/usr/local/samba/log/log.client
[2008/04/19 12:22:32, 0] auth/auth_util.c:create_builtin_administrators(792)
  create_builtin_administrators: Failed to create Administrators
[2008/04/19 12:22:32, 0] auth/auth_util.c:create_builtin_users(758)
  create_builtin_users: Failed to create Users
.......

Should I be unhappy about this and how can I solve that?

Some details about my system:
uname -a
Linux hagrid 2.6.16 #1 PREEMPT Mon May 22 14:42:12 CEST 2006 armv5tel GNU/Linux

more /etc/issue
Debian GNU/Linux 4.0 \n \l

dpkg -l | grep krb5
ii  krb5-config                  1.16
ii  krb5-user                    1.4.4-7etch4
ii  libkrb5-dev                  1.4.4-7etch4
ii  libkrb53                     1.4.4-7etch4

And finally my smb.conf:
[global]
        workgroup = FISI
        passdb backend = tdbsam
        log file = /usr/local/samba/log/log.%m

[homes]
        comment = Home Directories
        read only = No
        create mask = 0700
        directory mask = 0700
        browseable = No

Thank you in advance and best regards,
 Hartmut