samba - Nov 2003 - Problems with XP connecting to Linux SAMBA

Dear Experts,

For four days now I'm trying to solve the following problem and I would
be very happy, if someone had an idea, what to do.

Under SuSE 9.0 I installed a SAMBA-Server to which two Windows-XP
Clients are connecting - up to now everything worked fine.

Last week I connected another Windows-XP-Client, but with this client no
user can connect to a share. Though it's possible to list the shares,
it's not possible to connect to them. Everytime it appears the XP-Error-
Message, that the share is no longer available. On the other XP-Clients
there is no Problem to connect to the shares. In the smb.conf the whole
subnet is allowed to connect to the SAMBA-Server. Also there are no
Firewalls
or other filters. In the samba-log the connection to the share is listed
with no error.
But the directory is not listed on the new XP-Client (with the old clients,
there is
no problem to list the diretory) and after approx. 160 Seconds the
error-message on
the XP-Client appears and in the Samba-log a time-out appears.

So IMHO the error is not on the Server-Side but rather on the client-side of
the new XP-Machine.

As I have absolute no idea, where to look for errors on the XP-Machine,
I would be very happy, if someone had an idea, what to do.

Many thanks,

Michael