Howsit, I have seen only one error on the list that I would consider identical to this, but that was a squid-cache log and contains some other errors too. NOTE: I do NOT have access to the squid server or service, however if I can get the exact technical details of why it is happening, I can override, or at least test over-riding, the form properties one web browser on a OSX, will not POST for data, and sometimes GET data. Below is from the search page at squid-cache.org. Safari works fine on the same machine, there are Windows IE6 & FF2 on the same network that also work fine, and I use a linux laptop with KHTML, FF2, and Opera 9, which also use the same proxy, though through a different part of the network. I should also not that the 1st web page I check about ACCEPT-ENCODING, had a rather complex js inline form submit function, which may have been AJAX, anyway it was heavily scripted, and DID submit (without adding to the back button..) Now, what I kneed to know is the technical details of what is causing "malformed form data", as Henrick called it, to be sent to squid, and whether or not it has anything to do with squid NOT allowing "accept-encoding:gzip" from ANY browser. I should be able to "clean up" the form properties with some HTML wizidary & JavaScript magic, and possibly generate a client side header (if that is required). Is it possible that there is an intermediary response from the server, that can cause the reply from squid to balk, maybe FF & Apache combined are causing the failure, like a missing or malformed header of some kind. I have done a bit of research on this today, about 4 hours+ ATM, and there was only that one other post, but Henrick did not discuss the error I have, except to imply some form data looked to be "outside" even the error reply. I though maybe cookies with illegal characters might be the cause, but as you can see, the following didn't have any (supposedly). I may be able to "fix" this via some tricky server side code, pre-header the page as it were, but I need technical details to get that far. Or is there a way to get more technical data out of the squid error page or something like that.. .. anyway .. ======== ERROR The requested URL could not be retrieved While trying to process the request: POST /cgi-bin/swish-query.cgi HTTP/1.0 Host: www.squid-cache.org User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en-US; rv:1.8.1.11) Gecko/20071127 Firefox/2.0.0.11 Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 Accept-Language: en-us,en;q=0.5 Accept-Encoding: identity,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Referer: http://www.squid-cache.org/cgi-bin/swish-query.cgiProxy-Connection: keep-alive Cache-Control: max-age=0 Max-Forwards: 10 Connection: Keep-Alive The following error was encountered: * Invalid Request Some aspect of the HTTP Request is invalid. Possible problems: * Missing or unknown request method * Missing URL * Missing HTTP Identifier (HTTP/1.0) * Request is too large * Content-Length missing for POST or PUT requests * Illegal character in hostname; underscores are not allowed Your cache administrator is webmaster. Generated Sat, 19 Jul 2008 03:22:00 GMT by latrobe.slv.vic.gov.au (squid/2.7.STABLE2) ======== I do not mind posting this some place else, if this requires too technical an answer for this list, as long as someone can tell me where, just remember that i do not have access to squid or its server, however I may be able to request a "minor fix" be performed on the, on behalf of the organization itself (its a library) .. (I would prefer not to hack their server.. ) Paul