
Firefox 9 has officially gone from Alpha (Aurora) to Beta now that Firefox 8 final has been released. Mozilla continues to follow the same strategy as Google does with Chrome, creating different development channels to release early versions of their browser as soon as they’re available and keep the final one updated as often as possible.
There are several improvement in Firefox 9, although a few of them will only really benefit Mac users. For instance, there's improved theme integration for OS X Lion and Mozilla have finally added two finger swipe navigation for Lion.
There's also added support for querying Do Not Track status via JavaScript and improved general JavaScript performance courtesy of adding Type Inference. There have been several other minor tweaks too including improved standards support for HTML5, MathML, and CSS and overall stability has been improved.
The interface is pretty much the same as Firefox 8, with a minimalist toolbar and there's still no way of removing elements that you may not want such as Java and .Net Framework. The major downside for most users however is that some plug-ins or add-ons won't work with Firefox 9 yet - so if you have a lot installed, prepare to be disappointed.
Firefox 9 Beta has some useful enhancements for fans of the browser, especially those on Mac.

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Let me see now ? Three versions in 3 months. And the last 4 versions that I have had all had the same problem. 1. crashing almost daily. 2. not dependable password keeping. 3. A new version put out before the add on makers could catch up. Like may be Mozilla did not want the add on to work. 4. And without the add on book mark plugins Firefox box bookmarks stink. Mozilla Fire Fox may well be the best browser out there.(I USE IT EVERYDAY). But someone should tell then that changing Version numbers does NOT fix problems. A higher version number does not make a better browser!!! Lower problem numbers make the better browser. And when you have the same problems with each version. Something is wrong.
@RALPHEMC, A lot of people have reported similar problems with crashes although personally I haven't. I suspect it has either something to do with either plugins or other running processes on your PC conflicting with it. I agree with your complaints about the new release cycle they've adopted - just because Google do it doesn't mean they should.
Ah yes ! The old Blame my PC Ploy. Made famous by Microsoft and adapted by a lot of others who do not have an answer and want an easy way out. Well do not forget also to blame my laptop, and yes my computer at work. Even though they all run vastly different processes. I am sure that it is all them, and not The Browser.
@RALPHEMC, In that case I'd take a look at your add-ons (if any) and see if any of those are causing the problem.