Hi to all, I'm using squid with kerberos authentication. It was working just fine. For some unknown reason now it isn't. Look what it is in cache.log: squid_kerb_auth: ERROR: gss_acquire_cred() failed: Unspecified GSS failure. Minor code may provide more information. Permission denied 2012/05/07 17:08:38.743| authenticateNegotiateHandleReply: helper: '0xb112ed8' sent us 'BH gss_acquire_cred() failed: Unspecified GSS failure. Minor code may provide more information. Permission denied' The keytab file is already with proper permissions: ls -la /etc/squid/HTTP.keytab -rw------- 1 squid squid 1074 Mar 28 18:14 /etc/squid/HTTP.keytab What should I look for? regards, Wladner