Mozilla Firefox officially supports:
-Microsoft Windows
-Linux
-Mac OS X

Unofficial Support:
-Free BSD
-OS/2
-Solaris
-SkyOS
-BeOS
-XP Professional x64 Edition

Now here are some Tips&Tricks that can help you double the speed of Firefox.

Continue from http://chip.revivalx.com/?p=172

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

Hacking Firefox: More Than 150 Hacks, Mods, and Customizations (ExtremeTech)

Mozilla Firefox officially supports:
-Microsoft Windows
-Linux
-Mac OS X

Unofficial Support:
-Free BSD
-OS/2
-Solaris
-SkyOS
-BeOS
-XP Professional x64 Edition

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.

An old favourite gets a new look.

Now in version 8.0, AVG’s latest release appears to have taken a page or three form from Vista. A redesigned interface sports high-resolution icons and a more colorful palette, and even the system tray icon feels borrowed from Microsoft’s newest OS;turn off one of the security modules and the icon turns red, alerting you to impending doom, even if you’ve only disabled the spam filter. That’s just wacky. Thankfully, you can turn off the ominous notifications.

No other AV application we tested consumed more RAM, our perfomance benchmarks took the biggest hit with AVG installed.During a system scan( which, while not the slowest, dragged along at the tail end of all the suites), CPU utilization averaged 25 percent with sporadic spikes reaching as high as 84 percent. We didn’t know if AVG was scanning of having a seizure.

AVG provides one of the more feature –rich packages of the bunch. In addition to the new scanning engine, you’ll find spam and spyware protection, a firewall, safeguards against drive-by downloads, immunity against IM-bound attacks ( ICQ and MSN only), a customizable scheduler, and a rootkit scanner. Trying it all together is a back end brimming with options to satiate even the most demanding security connoisseur.

We especially like the concept behind AVG’s web protection, we just wish it worked better. The Active-Surf-Shield component scans visited web pages for malicious code and the Search Shield checks Google, MSN, and Yahoo search results for active threats, but enabling them slows down web surfing. And at the time of this writing, Search Shield is not working with Firefox 3.0.

AVG’s detection rate dips below that of the best-performing AV apps during Virus Bulletin’s extensive testing but still earned a VB100 award, meaning it caught all of VB’s in-the-wild viruses with no false positives. AVG also excelled in our tests. Just make sure you have a modern system to run it on.

Grisoft AVG Internet Security – 2 Year Subscription