Hi A few days ago, I already wrote a post concerning the following messages in the cache.log (squid 3.1.3): [2010/06/23 09:13:46, 1] libsmb/ntlmssp.c:335(ntlmssp_update) got NTLMSSP command 3, expected 1 [2010/06/23 09:13:46, 1] libsmb/ntlmssp.c:335(ntlmssp_update) got NTLMSSP command 3, expected 1 [2010/06/23 09:13:46, 1] libsmb/ntlmssp.c:335(ntlmssp_update) got NTLMSSP command 3, expected 1 Our authentication is ntlm-based. Thanks a lot. Tom