Hi all, Well, I have a really big problem, We have deployed a Squid with digest auth + LDAP, it was work perfectly but other department has installed a Trendmicro antivirii solution. Well the problem is that when trendmicro cliend ask squid to access an url, it fails in first acl related with auth. My log is this: Request: 2009/09/05 23:56:30.829| parseHttpRequest: Request Header is Host: licenseupdate.trendmicro.com:80 User-Agent: Mozilla/4.0 (compatible;MSIE 5.0; Windows 98) Accept: */* Pragma: no-cache Cache-Control: no-cache,no-store Proxy-Authorization: Digest username="avedstrend", realm="XXX", nonce="/kCjSgAAAAB4/JcCAAAAAKLZuWMAAAAA", uri ="http://licenseupdate.trendmicro.com:80/ollu/license_update.aspx?Protocol_version=1&AC=OSVMX49VN7GTUMQ8QYQAX SGJ72QENXK&Product_Code=OS&AP_Name=OC&OS=WW&Language=E&Product_Version=R3CnAGQAyAA", response="5bd515897ca2f1 84b196eae2fafc654a" Proxy-Connection: Keep-Alive Connection: Close Acl who fails: 2009/09/05 23:56:30.832| ACLChecklist::preCheck: 0x146e1b0 checking 'http_access deny !plUexception !plU' 2009/09/05 23:56:30.832| ACLList::matches: checking !plUexception 2009/09/05 23:56:30.832| ACL::checklistMatches: checking 'plUexception' 2009/09/05 23:56:30.832| authenticateAuthenticate: no connection authentication type 2009/09/05 23:56:30.832| AuthUserRequest::AuthUserRequest: initialised request 0x189cc30 2009/09/05 23:56:30.832| authenticateValidateUser: Validated Auth_user request '0x189cc30'. 2009/09/05 23:56:30.832| authenticateValidateUser: Validated Auth_user request '0x189cc30'. FATAL: Received Segment Violation...dying. As you see plUexception is failling , this acl is declared as next: plUexception acl auth user1 I wonder if anyone knows how to fix it. I was thinking on adding an acl in witch non auth is involved but I'm not very sure because enterprise policies. TIA. LD