Mozilla Firefox 3 Beta 2 Released

Mozilla has released Firefox 3 Beta 2.

Firefox 3 Beta 2 is a developer preview release of Mozilla’s next generation Firefox browser and is being made available for testing purposes only.

Firefox 3 Beta 2

Firefox’s planned integration with Linux and GTK themes is now implemented. The tabs look like GTK native tabs, but they really are just skinned versions of the old ones. The icons are used from the current GTK theme now. I noticed the the tool bar icon to open a new tab is a custom icon, even though there is a nicer default one that Epiphany uses.

Themed buttons

I ran Firefox 2 and Firefox 3 through the SunSpider JavaScript Benchmark to find if there was a speed advantage. Firefox 3 can run Javascript 14% faster than version 2 on my system:

Firefox 2: 12868.2ms +/- 0.3%
Firefox 3: 9684.8ms +/- 0.3%

Get Firefox 3 Beta 2 from Mozilla’s download page. You can follow my previous how to for beta 1 to install this new version.

Archived Comments


On mine (Dell Latidude D600), Firefox 3b2 is 70% faster! Not bad.

Andrew Conkling

For what it’s worth, I ran this against my Firefox and a vanilla profile of Firefox 2 and it was significantly different:


** TOTAL **: 1.29x as fast 47220.2ms +/- 5.0% 36618.2ms +/- 2.2% significant”

I know that most extensions don’t (yet) support Firefox 3, but the results may be skewed unless you’re testing vanilla profiles on each version.


firefox 3beta 2 dosent any themes did anyone where can i get the themes for firefox beta2


Mozilla’s addons site has themes, although only a few are compatible with beta 2.

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