Older versions may have known exploits that were not patched. So use the latest.
I'm still a "dummie" and you guys have always been a great help! Just switched over to a new(er) system: Dell 8400, Win XP-SP3, 500gb HD, 3gb RAM; Pentium4 (put my old HD inside too).
Need to download some programs that my tech guy didn't - so - please: What's The Best Version of FireFox for my system? I've read all your reviews! I realize FF has multiple rapid-release versions (now up to v10, right?), but I just need one that's stable & not too fancy (not too 'minimalist' Chrome-looking either!). I have no mobile devices & don't need dozens of tabs open. I was thinking of doing ver-4. Wha'd'ya think? Simple is best. Thanks in advance for your advice.