What You Need To Know When Installing Firefox 3.1 Beta 1

by Eric Pena on October 16, 2008

So you’ve heard about the latest 3.1 Beta 1 release of Mozilla’s popular browser, Firefox, and you’ve also heard that it’s blazing fast. Exciting, isn’t it? Ready to download and replace your current stable version? Well, go ahead… but better read this first!

Important things you need to know when installing Firefox 3.1 Beta 1:

  • While the release is stable, it is intended for Web developers and members of the Firefox testing community for evaluation and feedback.
  • Your current extensions and add-ons may or may not work properly until updates are made available.
  • It will replace your existing Firefox installation.
  • You won’t lose any of your bookmarks or browsing history.
  • Removing Firefox 3.1 Beta 1 won’t remove your bookmarks, web browsing history, extensions or other add-ons. This data is stored in your profile folder (~/Library/Application Support/Firefox if you’re using Mac; or Users\<UserName>\AppData\Roaming\Mozilla\Firefox if you’re using Vista).
  • Any version of Firefox that you install after removing Firefox 3.1 Beta 1 will continue to use the data from the profile folder.
  • Firefox 3.1 Beta 1 uses TraceMonkey to boost rendering speeds up to 40 times faster than the previous version of Firefox. By default, this is switched off. To enable it, do the following:
  1. Type about:config in the URL bar.
  2. Type javascript.options.jit.content in the Filter field.
  3. Double-click on the entry to set the value to true.
  4. Restart Firefox.
  • You can manually enable your add-ons that are “not compatible” by doing the following:
  1. Open a new tab and type about:config in the address bar.
  2. Right click anywhere in here and select Choose New>Boolean.
  3. Make the name of your new config value extensions.checkCompatibility and set it to false.
  4. Make another new boolean pair called extensions.checkUpdateSecurity and set the value to false.
  5. Restart Firefox.

What’s new in Firefox 3.1 Beta 1

  • Speeds up rendering with TraceMonkey.
  • Support for CSS 2.1 and CSS 3.
  • A URL bar that supports a range of special characters and a tab preview feature that can be used by pressing CTRL+TAB.
  • Also new is integrated support for new web technologies such as the <video> and <audio> elements, the W3C Geolocation API, JavaScript query selectors, web worker threads, SVG transforms and offline applications.

Ready to download? Get Firefox 3.1 Beta 1 here.

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{ 4 comments… read them below or add one }

1 Gabriela October 23, 2008 at 1:16 pm

Hi!
I did just what you said:

1. Open a new tab and type about:config in the address bar.
2. Right click anywhere in here and select Choose New>Boolean.
3. Make the name of your new config value extensions.checkCompatibility and set it to false.
4. Make another new boolean pair called extensions.checkUpdateSecurity and set the value to false.
5. Restart Firefox.

But the system didn't accept the boolean option and created a string one instead. So every time I run FF 3.1 it checks the extensions compatibility.
Could you please tell me if there is a way to avoid this?
How do I force a boolean option? Is it possible?
Many thanks for your answer!
Gabriela

2 Gabriela October 24, 2008 at 3:16 am

Hi!
I did just what you said:

1. Open a new tab and type about:config in the address bar.
2. Right click anywhere in here and select Choose New>Boolean.
3. Make the name of your new config value extensions.checkCompatibility and set it to false.
4. Make another new boolean pair called extensions.checkUpdateSecurity and set the value to false.
5. Restart Firefox.

But the system didn't accept the boolean option and created a string one instead. So every time I run FF 3.1 it checks the extensions compatibility.
Could you please tell me if there is a way to avoid this?
How do I force a boolean option? Is it possible?
Many thanks for your answer!
Gabriela

3 Swing Trading October 3, 2009 at 12:30 pm

Interesting post. I have stumbled and twittered this for my friends. Hope others find it as interesting as I did.

4 eddiepetosa October 8, 2009 at 9:11 pm

You thought Firefox 3.1 Beta had problems? How about writing a post about Firefox 3.5? It makes my machine slow, it jams all the time, I get errors like “This is embarrassing ” and so on. I can't even pass the ssl requirements for some sites that I was able to see before the update.

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