[Samba] WinXP/2k can't connect to Linux ADS member

[Fernando Ruza]

Hi,

I have a linux box configured with samba-3.0.1pre1-1 joined to my Win2k
ADS domain.  I can succesfully use kinit and smbclient -k without
entering a user/pass to connect to things on my network. Winbind,
getent, wbinfo, ... everything works great however, from WinXP and Win2k
client  hosts I cannot connect to my linux shares. From Win95/98 clients
works great.

Always that I connect from WinXP and Win2k hosts to the Linux shares it
asks me for username/password authentication and none works. The error I
get from WinXP, Win2k hosts is ALWAYS:

[2003/09/29 11:09:57, 1] smbd/sesssetup.c:reply_spnego_kerberos(218)
   Username <host.I'm.connecting.from>$ is invalid on this system

No other errors.  I've tried setting client use spnego = no with no
luck.

This is very strange. I don't know what to do and where to see know. Any
suggestions will be very apprecicate?

Thanks in advance,

Fernando.