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- Filename: Firefox 3.1 Beta 2.exe
- Filesize: 7.39 MB (7,747,744 bytes)
- Requirements: Windows 2000/XP/2003/Vista/XP64/Vista64

Firefox 3.1 Beta 2 is based on the Gecko 1.9.1 rendering platform, which has been under development for the past 7 months. Gecko 1.9.1 is an incremental release on the previous version with significant changes to improve web compatibility, performance, and ease of use:

* This beta is now available in 54 languages - get your local version.
* Added a new Private Browsing Mode.
* Added functions to make it easy to clear recent history by time as well as remove all traces of a website.
* New support for web worker threads.
* The new TraceMonkey JavaScript engine is on by default for web content.
* Improvements to the Gecko layout engine, including speculative parsing for faster content rendering.
* Removed the new tab-switching behavior based on feedback from users
* Support for new web technologies such as the and elements, the W3C Geolocation API, JavaScript query selectors, CSS 2.1 and 3 properties, SVG transforms and offline applications. More information.
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