Hello I have a problem with - squid-3.3.9 - squid-3.4.5 but NO problem with: - squid-2.7.stable9 - without proxy I have tested with firefox 24.6 and ie explorer 8.0. On browser the error displayed is: The following error was encountered while trying to retrieve the URL: http://www.regione.lombardia.it/ Read Error The system returned: (104) Connection reset by peer An error condition occurred while reading data from the network. Please retry your request. Your cache administrator is ....... On access.log (on ver 3.3.9) 1405342317.708 7 xxx.xxx.xxx.xxx:52686 TCP_MISS/502 4072 GET http://www.regione.lombardia.it/- HIER_DIRECT/www.regione.lombardia.it text/html HTTP/1.1 "-" 357 4072 "Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Firefox/24.0" (on ver 3.4.5) 1405342612.999 7 xxx. xxx.xxx.xxx:52718 TCP_MISS/502 4072 GET http://www.regione.lombardia.it/ - HIER_DIRECT/www.regione.lombardia.ittext/html HTTP/1.1 "-" 357 4072 "Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Firefox/24.0" (on 2.7) 1405339974.820 366 xxx.xxx.xxx.xxx:52473 TCP_MISS/200 148096 GET http://www.regione.lombardia.it/shared/ccurl/683/852/banner.jpg - DIRECT/62.101.84.131 image/jpeg HTTP/1.1 "http://www.regione.lombardia.it/cs/Satellite?c=Page&childpagename=HomeSPRL/HomePageLayout&cid=1194454760265&pagename=HMSPRLWrapper&rendermode=live 528 148096 "Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Firefox/24.0" Do you have any idea? Regards, Maurizio