I have a problem when visit some site(only with ie7 and ie8) i use redhat 5 squid 2.6stable21 return me this error ERROR The requested URL could not be retrieved While trying to process the request: GET /esystem/asp/login.asp HTTP/1.0 Accept: image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, */* Referer: http://www.abilearning.it/esystem/index.asp Accept-Language: it Proxy-Connection: Keep-Alive Host: www.abilearning.it The following error was encountered: Invalid Response The HTTP Response message received from the contacted server could not be understood or was otherwise malformed. Please contact the site operator. Your cache administrator may be able to provide you with more details about the exact nature of the problem if needed. i try to use this: acl broken dstdomain abilearning.it header_access Accept-Encoding deny broken but not work in the cache.log there isn't any error and i try to use relaxed_header_parser warn Thanks Jacopo -- Linux, Windows Xp ed MS-DOS (anche conosciuti come il Bello, il Brutto ed il Cattivo). -- Matt Welsh