I switched from Mozilla to Chrome... Mozilla is just waaay too slow. The only thing I missed were the extensions, but Chrome is getting better on those as well.
Based on my experience, Mozilla has a lot of reasons to be afraid of Chrome.
We are nearing the end of our Firefox 3 cycle (Firefox 4 is going to be released next month), and that's where our significant speed improvements have been implemented in the last 2 years. It's about even with Chrome speed-wise.
Based on my experience, Mozilla has a lot of reasons to be afraid of Chrome.