Hello, in a proxy server with some hunderds of users, i experience temporary problems with ntlm authentication; Squid says access deny for some minutes, then everything returns working without any actions. In cache.log i noticed these errors: AuthNTLMUserRequest::authenticate: attempt to perform authentication without a connection! I raised up the per-process max open files to 4096; do you think i am low of authenticator process (200)? Could it be this the problem? I have no cache on ntlm auth helper... Thank you, Francesco