I can confirm that on 3.3.13 all is working correctly, the cpu usage is really low. -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/squid-3-4-uses-100-cpu-with-ntlm-auth-tp4664169p4667645.html Sent from the Squid - Users mailing list archive at Nabble.com.