samba - Mar 2002 - Windows client login to samba problem

Dear all,

    I use Samba as a workgroup (not PDC server)
    I can see the samba on network, but when I try to access the share
folder, it can't read. the log (smb.log) on the server show below:

[2002/03/06 14:57:02, 1] lib/util_sock.c:client_name(1012)
  Gethostbyaddr failed for 192.168.10.4
which "192.168.10.4" is the window client.

Please help me

Regards,
K.K. Kwan