[CentOS] Samba problem after Up2date

another detail.

When i try this command " smbclient //192.168.0.10/informatica 
-Uinformatica" and i give the correct password i get this

[root at servidor ~]# smbclient //192.168.0.10/informatica -Uinformatica
Unknown parameter encountered: "hosts equiv"
Ignoring unknown parameter "hosts equiv"
Password:
Domain=[MAKIMET] OS=[Unix] Server=[Samba 3.0.25b-1.el4_6.4]
Server not using user level security and no password supplied.
tree connect failed: NT_STATUS_BAD_NETWORK_NAME


What i can notice here is that is says that the server is not using 
security..... what is that for?
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