Now here are some Tips&Tricks that can help you double the speed of Firefox.
1. Type about:config in the address bar and then press Enter.
2. In the filter search bar type network.http.pipelining. Be sure the value field is set true,if
not double-click to set true. HTTP is the application-layer protocol
that most web pages are transferred with. In HTTP 1.1, multiple
requests can be sent before any responses are received. This is known
as pipelining. Pipelining reduces page loading times, but not all
servers support it.
3. Go back to the filter search bar and type network.http.pipelining.maxrequests. Double-click this option and set its value to 8.
4. In the filter search bar and type network.http.proxy.pipelining. Once opened doubleclick on it and set it to true.
5. In IPv6-capable DNS servers, an IPv4 address may be returned when an
IPv6 address is requested. It is possible for Mozilla to recover from
this misinformation, but a significant delay is introduced.
Type network.dns.disableIPv6 in the filter search bar and set this option to true by double clicking on it.
6. CONTENT INTERRUPT PARSING
This preference controls if the application will interrupt parsing a
page to respond to UI events. It does not exist by default. Right-click
(Apple users ctrl-click) anywhere in the about:config window, select New and then Boolean from the pop-up menu. Then:
A. Enter content.interrupt.parsing in the New boolean value pop-up window and click OK
B. When prompted to choose the value for the new boolean, select true and click OK.
7. Rather than wait until a page has completely downloaded to display
it to the user, Mozilla applications will regularly render what has
been received to that point. This option controls the maximum amount of
time the application will be unresponsive while rendering pages.
Right-click (Apple users ctrl-click) anywhere in the about:config window, select New and then Integer from the pop-up menu.
A. Enter content.max.tokenizing.time in the New integer value pop-up window and click OK
B. You will be prompted to enter a value. Enter 2250000 and click OK.
8. CONTENT NOTIFY INTERVAL
This option sets the minimum amount of time to wait between reflows. Right-click (Apple users ctrl-click) anywhere in the about:config window, select New and then Integer from the pop-up menu.
A. Type content.notify.interval in the New integer value pop-up window and click OK.
B. You will be prompted to enter a value. Enter 750000 and click OK.
9. CONTENT NOTIFY ONTIMER
A. This option sets if to reflow pages at an interval any higher than
that specified by content.notify.interval. Right-click (Apple users
ctrl-click) anywhere in the about:config window and select New and then Boolean from the pop-up menu.
B. Type content.notify.ontimer in the New boolean value pop-up window and click OK.
C. You will be prompted to choose the value for the new boolean. Select true and click OK.
10. Notify Backoffcount
This option controls the maximum number of times the content will do
timer-based reflows. After this number has been reached, the page will
only reflow once it is finished downloading. Right-click (Apple users
ctrl-click) anywhere in the about:config window and select New and then Integer from the pop-up menu.
A. Enter content.notify.backoffcount in the New integer value pop-up window and click OK.
B. You will be prompted to enter a value. Enter 5 and click OK.
11. CONTENT SWITCH THRESHOLD
You can interact with a loading page when content.interrupt.parsing is
set to true. When a page is loading, the application has two modes: a
high frequency interrupt mode and a low frequency interrupt mode. The
first one interrupts the parser more frequently to allow for greater UI
responsiveness during page load.
The low frequency interrupt mode
interrupts the parser less frequently to allow for quicker page load.
The application enters high frequency interrupt mode when you move the
mouse or type on the keyboard and switch back to low frequency mode
when you had no activity for a certain amount of time. This preference
controls that amount of time. Right-click (Apple users ctrl-click)
anywhere in the about:config window and select New and then Integer from the pop-up menu.
A. Enter content.switch.threshold in the New integer value pop-up window and click OK.
B. You will be prompted to enter a value. Enter 750000 and click OK.
12. NGLAYOUT INITIALPAINT DELAY
Mozilla applications render web pages incrementally, they display what’s been received
of a page before the entire page has been downloaded. Since the start of a web page
normally doesn’t have much useful information to display, Mozilla applications will wait
a short interval before first rendering a page. This preference
controls that interval. Rightclick (Apple users ctrl-click) anywhere in
the about:config window and select New and then Integer from the pop-up menu.
A. Enter nglayout.initialpaint.delay in the New integer value pop-up window and click OK.
B. You will be prompted to enter a value. Enter 0 and click OK.
Subject: Laju speed Firefox 
