User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:16.0) Gecko/20100101 Firefox/16.0 Build ID: 20121025212310 Steps to reproduce: I have been using HTTP Pipelining in Firefox on and off for years without any issue. Actual results: Firefox does not enable HTTP Pipelining by default Expected results: Firefox is a world class browser and like B2G, Safari, iOS's Browser, Androids Browser, Chrome, Chromium and Opera it should enable HTTP Pipelining by default. http://www.w3.org/Protocols/rfc2616/rfc2616.html HTTP Pipelining is not a new standard and has proven itself in testing and Firefox users could benefit from Pipelining if it were enabled.... Clearly its not a flip of the switch enablement because there will need to be a fallback for any issues encountered but at the same time pipelining not being the default seems like a mistake.