Hi guys, At first I have to appologize for starting a new thread concerning this message: [2010/10/01 12:29:45, 1] libsmb/ntlmssp.c:ntlmssp_update(334) got NTLMSSP command 3, expected 1 I know that it has been discussed previously and I read almost all of the answers but I did not find any solution. Maybe I missed an acceptable answer or maybe there are new infos concerning this topic? Anyway, I am using Squid 3.1.8 on RHEL5.5 with NTLM authentication (Server is joined to AD2003 domain) and this message appears in my cache.log-file multiple times (at arbitrary times). I don't really know why or how to prevent it, a few posts said that it is a client issue or that we could use authenticate_ip_shortcircuit_ttl on Squid (<3.x). My browsers are IE, FF, Chrome on WinXP SP3, unfortunately, I don't know which client causes the problem and neither do I know any possibility to prevent that problem from occur, has anybody any ideas? (I could switch to Kerberos, this may solve the problem. Even if it is a much more secure and better solution, I would prefer a different solution) thanks best regards Peter