1.Type about:config into the address bar and hit return. Type network.http in filter field.

2. Set network.http.pipelining to true
3. Set network.http.proxy.pipelining to true
4. Set network.http.pipelining.maxrequests to 20~30. Don\'t go beyond 30.

5.(Optional) Right-click anywhere, select New Integer, and name it nglayout.initialpaint.delay. Then set its value to 0.

Restart your FF, and you are experiencing FFF(Faster FireFox) now.