I performed an upgrade to my proxy server. It was running on Ubuntu 6.06 with Squid 2.5 stable 12 I performed an automatic upgrade to 8.02 with Squid 2.6 stable 18 (From the repositories) However the NTLM authentication is now not working. I have checked the Samba config and it is fine and the server can talk to my Active Directory. However in the cache.log I am getting the message that Login for user xx failed due to [winbind client not authorized to use winbindd_pam_auth_crap. Ensure permissions on /var/run/samba/winbindd_privileged are set correctly.] The guide I have for setting squid up with the Active Directory mentions this and says that I need to have cache_effective_group root in my squid.conf. This is there but it still will not authenticate. Any ideas? Cheers