[Samba] no session setup ?!?

[Michael Knigge]

All,

I start SAMBA 3.0 (Debian woody) and I can access my shares without a
problem - from Windows 2000 SP4.

The next day I again boot my Windows boy and I can not access the shares.
In my smbd.log I see many lines like this:

[2003/12/18 21:49:45, 1] smbd/service.c:make_connection(785)
  make_connection: refusing to connect with no session setup


Could someone explain to me what is going wrong here? SAMBA 3.0 is running
standalone (not as a PDC).

Thank you,
  Michael