Hello, I got an installation of squid1->squid2->nginx And found in squid2 many entries(with debug_options 11,3), : ctx: enter level 0: 'URL' processReplyHeader: key '...' ctx: exit level 0 WARNING: HTTP: Invalid Response: No object data received for ... Looks like squid2->nginx has problems negotiating response? Well, squid1 also reports 'No object data received'(1/3 as many as in squid2), immediately following statusIfComplete: Request not yet fully sent ... Is there a debug section that logs timeout, to confirm upstream not so responsive? Thanks kc