Mozilla Firefox是一个自由的,开放源码的浏览器,适用于Windows, Linux 和 MacOS X平台。它还有其它一些高级特征,如标签式浏览,可以禁止弹出式窗口.内置了钓鱼保护、改变标签浏览行为、能够重新打开以外关闭的标签、更好的支持网页订 阅的预览和订阅、拼写检查、支持JavaScript 1.7等.下载:Firefox 3.6.4 Beta

What’s New in Firefox 3.6.4 Beta

Firefox 3.6.4 provides uninterrupted browsing for Windows and Linux users when there is a crash in the Adobe Flash, Apple Quicktime or Microsoft Silverlight plugins.
If a plugin crashes or freezes, it will not affect the rest of Firefox. You will be able to reload the page to restart the plugin and try again.
Firefox 3.6.4 also fixes the following issues found in previous versions of Firefox 3.6:

    * Fixed several security issues.
    * Fixed several stability issues.

查看ReleaseNote: http://www.mozilla.com/en-US/firefox/3.6.4/releasenotes/