Hi, I'm using squid version - 2.7 Stable9. My Kerberos authentication is working good as well. I'm receiving this info in my cache.log and just want to confirm that its not worry some. squid_kerb_auth: parseNegTokenInit failed with rc=102 2011/07/21 10:54:50| squid_kerb_auth: AF oYGgMIGdoAMKAQChCwYJKoZIgvcSAQICooGIBIGFYIGCBgkqhkiG9xIBAgICAG9zMHGgAwIBBaEDAgEPomUwY6ADAgEXolwEWobQXIUTVLEfPspj7ZpRThBLZzVgpamXrYmsjvHrxTIgQUWJ8eH1fQESDD2Zn4hsH2uNucFM2u4aJW10mIZTmLkwcNn0Ufj+QsdeP6XsPtqw7HZDZy4v/vV3lA== kite.k@xxxxxxxxxxxx I get this info for all users who access squid. If someone is using IE 6 then this log doesnt comes up. I have passed -s -d options to squid_kerb_auth in squid.conf, is it becuz of this that I receive above info? Thanks for your help, as always you guys are great helping us.