I'm using Firefox 2 Beta 2 for the first time, so far so good. I had to stop using Beta 1 as every any time I tried to make significant changes when creating text, Firefox would crash on me. I'm using TinyMCE, a WYSIWYG for the text area, here at CMS Report. If not for the session restore feature...Beta 1 could have been even more frustrating. The original announcement from MozillaZine below.

MozillaZine: Mozilla Firefox 2 Beta 2 Milestone Released -

Mozilla Firefox 2 Beta 2 has been released. This milestone for developers and testers includes a visual refresh of the theme and user interface. Other features new to Firefox 2 include phishing protection, search suggestions, session restore, support for JavaScript 1.7, Live Titles for bookmarks (using microsummaries) and a new Windows installer.

For more information, refer to the Mozilla Firefox 2 Beta 2 Release Notes, and the release announcement at the Mozilla Developer News weblog, which includes download links.