I am using ICAP and squid 3.3.9 After some interval I got following messages in cache.log and squid get stop. 2014/03/04 16:01:35 kid1| ACL::checklistMatches WARNING: 'http_denied_status' ACL is used but there is no HTTP reply -- not matching. 2014/03/04 16:01:35 kid1| ACL::checklistMatches WARNING: 'http_denied_status' ACL is used but there is no HTTP reply -- not matching. 2014/03/04 16:01:35 kid1| ACL::checklistMatches WARNING: 'http_denied_status' ACL is used but there is no HTTP reply -- not matching. 2014/03/04 16:01:35 kid1| ACL::checklistMatches WARNING: 'http_denied_status' ACL is used but there is no HTTP reply -- not matching. 2014/03/04 16:01:35 kid1| ACL::checklistMatches WARNING: 'http_denied_status' ACL is used but there is no HTTP reply -- not matching. 2014/03/04 16:01:35 kid1| assertion failed: DestinationIp.cc:58: "checklist->conn() && checklist->conn()->clientConnection != NULL" How do i resolve this issue?