Firefox ships with HTTP pipelining disabled by default. No pipelining means each request has to be answered and its connection freed up before the next request can be sent. This adds average extra time to the user divided by the number of connections allowed. Even worse if your server has HTTP keep-alive connection disabled, doubling this latency.

Pipelining is an experimental feature, designed to improve page-load performance, that is unfortunately not well supported by some web servers and proxies. But this will boost for sure your page loading especially if you have a broadband Internet connection.(ADSL, DSL, Wi-Fi, WLAN, LAN)

Enable Pipelining

Try it out, type "about:config" in browser address line and set the following preferences:

• network.http.pipelining - Set to true, to enable pipelining.
• network.http.proxy.pipelining - Set to true, to enable pipelining to the proxy server.
• network.http.pipelining.maxrequests - Set to 8, to have a maximum of 8 pipelining requests at once. Possible values are from 1 to 8.