Hello! Os Centos 5.8 I have problem with new squid-3.1.19-1.el5. I use curl for my website; I use command: curl -D header.txt -x MYIP:PORT -U "login:password" -d "POSTREQUEST" http://mysite/scrip.php But when i updated squid i got error in header.txt: HTTP/1.0 417 Expectation Failed Server: squid/3.1.19 Mime-Version: 1.0 Date: Tue, 27 Mar 2012 01:28:19 GMT Content-Type: text/html Content-Length: 4220 X-Squid-Error: ERR_INVALID_REQ 0 Vary: Accept-Language Content-Language: en X-Cache: MISS from server.domain.com X-Cache-Lookup: NONE from server.domain.com:63778 Connection: close I get this error when POSTREQUEST is BIG(have big length) ONLY!!! I have not this problem with old version of squid. P.S. Sorry for my english