I ended up buying a new laptop several months ago mostly due to how badly Firefox was running on my system at the time. I had a PBG4 and was using the TenFourFox build of Firefox for PPC; Firefox was consuming epic amounts of memory and had a really funky stop-the-world pause every minute or so by the end of the day, requiring daily restarts and other hassles. That laptop did everything else I needed it to do, but since enough of my work requires a web browser, I ended up buying a new system just so that I could switch to Chrome.

I've also seen similar behavior on Windows XP systems and other older hardware. I suspect that "Firefox works great" is true mostly for people running on relatively new systems, although I haven't so much as opened Firefox in the last 6 months, so I have no idea what their current software is like.

There are comments on every Firefox thread about problems people have had with it. Declaring "baloney" is as stupid as if I were to respond to the above comments about Chrome by saying, "Nonsense. Chrome works great for me, I never have a problem with it."