Firefox 3.6 Released!
The latest version of your favorite browser has been released.  Firefox 3.6 is now available via Mozilla’s web site.  The big update this time around is the built in support for Firefox Personas.
Need more? Here’s the full list of new features that Firefox 3.6 brings:

Available in more than 70 languages – get your local version.
Support for a new type of theme called Personas, which allow users to change Firefox’s appearance with a single click.
Protection from out-of-date plugins to [...]

Do you remember Jetpack?
It is the Mozilla Labs project that makes the add-on building process easier, mixing elements of HTML, CSS and JavaScript.  Mozilla has released an awesome Jetpack Gallery, which serves as a community for Jetpack developers and add-on users.

The first update to Firefox 3.5 has just been released.  To get the update right now, all you need to do is go to Help > “Check for Updates…” in your browser.  So what exactly is this new update fixing? 
Both the slow startups for Windows users and the JavaScript memory corruption flaws have been fixed.  After the update is in place, if you set javascript.options.jit.content to false via about:config, you can now go back in and set it [...]

Ever wanted to write your own Firefox extension, but thought the process was too drawn out or difficult to do?  Jetpack is looking to use open Web technologies to enhance the browser.  The idea here is that if you can make a web page, you will be able to build an add-on for Firefox.
This video does a great job at giving you a basic walk-though of what Jetpack development looks like thus far:

Mozilla Labs Jetpack – Intro & Tutorial from [...]

Don’t you have it when you have lost your perfect spot for your browser window in your desktop layout and you have to put it back by dragging it over, then resizing each corner till it is back in that perfect spot yet again?  Well, with the help of a little JavaScript you can take the mess out of resizing and repositioning your browser.
Why Resize and Reposition Firefox Automatically?
When working I usually like to keep up a chat window, [...]

Thanks to a new JavaScript engine (named TraceMonkey) it looks as if Firefox 3.1 is going to be getting a major boost in performance.
Here are the benchmarks thus far:

Be sure to check out Brendan’s Roadmap Updates for more.  Also here are a few handy links from John Resig on the testing:

SunSpider, 1.83x faster (released by the WebKit team)
SunSpider ubench, 22.5x faster (released by the WebKit team for testing Squirrelfish)
Image Manipulation Demo, 6.46x faster (Change the contrast and brightness of images [...]

Controle de Scripts is an add-on for Firefox that allows you to control what JavaScript on a web site can (or can not) do to your browser.  Here is a little more about the extension from the developer:

Besides the well-known basic permissions, like hiding toolbars or raise or lower windows, with Controle de Scripts you can set what functions or properties each site can access or modify, thanks to its Security Policies implementation.
Think of it as the regular permissions for [...]

We are always talking about adding features to Firefox, what about for those people who would like to take them away?  Better yet, how about adding features that let you take other features away?  Ok, now I am even confusing myself. 
Firefox has some great add-ons to use when it comes to blocking, filtering or checking out the sometimes shady information that may be passing through it.
LeechBlock – This extension is much more for saving you from looking at [...]

Just got my update a short time ago, have you gotten yours.  Looks like Firefox 2.0.0.1.4 was released yesterday afternoon, and if you have automatic updates enabled in Firefox, you should be getting it yourself in 24-48 hours.  This looks to be like a critical security update because only one change mentioned in the release notes.  Wasn’t rolled in together with any other fixes.
Here are the details from Mozilla:
Fixes for security problems in the JavaScript engine described in MFSA 2008-15 [...]

Firefox 3 has a lot of nice new features, the design is slick and it promises to be yet another Mozilla home run! Now a lot of people could really care less about those three facts because much of the Web is much more considered with how fast Firefox 3 is going to be. Well thanks to Ryan over at CybernetNews.com we have some numbers for you.
Using the SunSpider JavaScript Benchmark test for each of the browsers, here [...]