[Samba] Connection refused

[SEG7]

Hi, i'm having trouble with Samba i can't connect several computers over
the same network, but i have the 
hosts directive open the all the network. Here is what i'm getting:
 
smbclient \\\\193.139.195.225\\software -U seg7
added interface ip=193.139.195.221 bcast=193.139.195.255
nmask=255.255.255.192
error connecting to 193.139.195.225:139 (Connection refused)
Connection to 193.139.195.225 failed
 
Another computer in the same network, logs fine:
 
smbclient \\\\193.139.195.225\\software -U seg7
added interface ip=193.139.195.220 bcast=193.139.195.255
nmask=255.255.255.192
Password: 
Domain=[CCOM] OS=[Unix] Server=[Samba 2.2.3a]
smb: \>
 
The smb.conf has   hosts allow = 193.139.195.
 
The authtication is using a PAM module with mysql.
Anyone has a clue?
Thnx
 
SEG7
 
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