Auth NTLM ?

[Phibee Network Operation Center <noc@xxxxxxxxxx>]

Hi

i have a small problems :

My user use a NTLM authentification on my squid proxy, when he want 
going on a
web site that request a authentification, he receive a Authentification 
Faild without a user/pass
request

if he don't put the proxy, the web site request the login/pass and 
that's work.

Anyone have a idea why ? Does squid sent the l/p of the first ntlm auth 
at the second server automatiquely ?

thanks
Jerome