PAM error

[Henri J. Schlereth]

Here is the error.

/var/log/messages
Sep  1 01:12:39 kesrith PAM_pwdb[6404]: 1 authentication failure; (uid=0) -> henris for samba service

(actual UID is 500)
This only happens when I try to map a network drive on the Win95 client,
it induces a delay of about a minute and then maps the drive anyway.
My current setup is RH5.0, samba-1.9.18p8-50.1 (rpm).
This problem has existed on previous versions RH42 samba-1.9.18p8-42.1
and I believe on lower samba versions.

Any ideas, input would be welcome. Also smbclient screams for 
lmhosts file, I got around  that by symlink to hosts file.