1. Enable pipelining
To enable it, type about:config in the address bar, double-click network.http.pipelining and network.http.proxy.pipelining so their values are set to true, then double-click network.http.pipelining.maxrequests and set this to 8. that should be it on that and your all done :) next tip
2. Render quickly
Type about:config and press [Enter], then right-click (Apple users ctrl-click) somewhere in the window and select New > Integer. Type content.notify.interval as your preference name, click OK, enter 500000 (that’s five hundred thousand, not fifty thousand) and click OK again.
Right-click again in the window and select New > Boolean. This time create a value called content.notify.ontimer and set it to True that should be it :)
3. Faster loading
if your firefox is slow at loading you might wanna do these also, :0).
Type about:config and hit [Enter], right-click in the window and select New > Integer. Type content.switch.threshold, click OK, enter 250000 -a quarter of a second- EASY wasnt it :)
4. Block Flash altogether
Install flashblock add on tool froom google, Also adblocker plusblocks great stuff also,
5. Increase the cache size
follow these steps on how to do it Type about:config and press (Enter), then right-click anywhere in the window and select New > Integer. Type browser.cache.memory.capacity, click OK, enter 65536 and click OK, then restart your browser to get the new, larger cache.thats it heeh easy wasnt it :)
6. Reduce RAM usage when Firefox is minimized
Go to about:config, right-click anywhere and select New-> Boolean. Name it “config.trim_on_minimize” and set it to TRUE. Easy wasnt it :)
7. Tune up Firefox
FireTune enables you to optimise Firefox’s settings, based on your computer and internet connection. google it and you will see a bunch sites offering it free program try it out see what it does,
8. How to make firefox start faster easy as cake :)
clear out all history makes adifferent
Go to -> Tools -> Options and click on the > Privacy tab. Mark the checkbox which says about the Clearing history when the Firefox gets closed. easy huh :)
Clear out extensions that you no longer use are dont need :) too much add ons extensions wil make your firefox slow so be carefully of how many you install :)
Clean the ‘Places’ database often as you can And here free add on to help ya :)
https://addons.mozilla.org/en-US/firefox/addon/13878/