This tricks will improve the speed & load time of firefox. And you will be able to surf faster.Type about:config in the address bar, Then look for the following entries, and make the corresponding changes.

network.http.max-connections-per-server=32 network.http.max-persistent-connections-per-proxy =16 network.http.max-connections =64 network.http.max-persistent-connections-per-server = 10 network.http.pipelining = true network.http.pipelining.maxrequests = 200 network.http.request.max-start-delay = 0 network.http.proxy.pipelining = true network.http.proxy.version = 1.0