Hi folks, I'm running Squid 3.2.1 with NTLM auth configured as follows: auth_param ntlm program /usr/bin/ntlm_auth --helper-protocol=squid-2.5- ntlmssp auth_param ntlm children 133 auth_param ntlm keep_alive off And I'm seeing an issue where internet access was not available until Squid was restarted. Some requests were being serviced, but most were not. ntlmauthenticator from the manager reported the following: (I've put it on pastebin because it's moderately large): http://pastebin.com/5cvCteeU Restarting Squid obviously closed the connections, and resolved the issue, but it's not really practical to keep restarting. This issue is not present in 3.1.9. Have there been any significant modifications between 3.1.9 and 3.2.1 that could have caused this? Or shall I file a bug report? I'm more than happy to provide what additional information I can to help diagnose the issue. There are about 1500 machines running behind Squid, for what it's worth. Thanks, Nathan.