[squid-users] Problem with Squid 3.4.4 and NTLM authentication

[Job]

Hello,

sinec i upgraded two Squid proxy servers to the Squid-3.4.4 versions, we have some huges bottleneck with ahtenticated ntlm (old style!) users.
If i disable authentication and enable per-ip surf, it works fine.

Plesae note that squid process raise up to 100%.

Here is my auth ntlm configuration:

auth_param ntlm program /usr/bin/ntlm_auth --helper-protocol=squid-2.5-ntlmssp
auth_param basic program /usr/bin/ntlm_auth --helper-protocol=squid-2.5-basic
auth_param basic children 200
auth_param basic credentialsttl 2 hours

Perhaps have i to change something?

Thank you,
Francesco