To start:
Open Firefox.
Type "about:config" in the adress bar.
Find these options, double click each one and change to below values:
CODE

network.http.max-connections: 48

network.http.max-connections-per-server: 24

network.http.max-persistent-connections-per-proxy: 12

network.http.max-persistent-connections-per-server: 6

network.http.pipelining: true

network.http.pipelining.maxrequests: 8

network.http.proxy.pipelining: true


After changing the values just close Firefox and open it again.

Edit:
Some people told that these setting may hammer some servers.
Changing the "network.http.pipelining.maxrequests" to max of 8 will probably solve the problem.
(reduced to 8 from 16)

Enjoy the speed! biggrin.gif