I have just installed firefox 3 on my Macbook, was using FF2 until I accidentally deleted the install file. No problem, download FF3 and installed within just a few minutes.
Actually I have forgotten and didn’t realized that I was still using FF2 until I installed and opened up FF3 browser. Wow…it is FAST man! Loading time is much faster than FF2 and pages appear smoothly in short time!
I have been a big fan of Firefox browser, using it 99.9% of the time since many years ago. I have been using FF3 in Windows XP for many months, but only now installed to my OSX. No regret, great software, great upgrade!
The best thing…IT IS FREE! 
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but some script and plug-in is not supported by ff3….that’s the weakness….
I believe programmer has to take note of that…as FF3 and IE6 / 7 are the most use browsers nowadays.
