troubles SMBclient vs SMB !

[Manuel]

Hi, It's Manuel from Italy.

I configured a Samba to work as PDC,everithing is good.
I have another linux box, I tried some manners to estabilish a 
connection via SAMBA.
Everithing worked well, with smbclient, smbmount, mount -t smbfs ...

mount -t smbfs ? YES but during a session my client crashed (I was 
testing X-Window...)

and now it's a DISASTER.

from this client machine I can reach the server only as anonymous user!!!

I tried everithing on client side (changin' netbios name, Ip address, 
Re-installing the system)
On the server side I defined another machine$

I GET EVERYTIME THE SAME ERROR: session setup failed: code 0

 From other clients (windoze2k) everithing works well, and I can reach 
all the others but the server from my linux-client

What damn it happened? Sorry for the long mail and PLEASE HELPME!!!!