Last week, in Google Chrome is the New Firefox, and Firefox the new IE, I ranted a bit about how slow Firefox 3 (notably tab switching and the "awesome" bar") was on my Ubuntu 9.04 machine. Needless to say, I got some good feedback from that post and it prompted it me to do a few things.
I've since been running both Firefox 3.5 as well as the Firefox 3.6 trunk code and can say that both are notably faster than Firefox 3.0.xx. The difference between 3.0.xx and 3.5 was substantial and really helped to close the gap with Chrome. Going to the 3.6 alpha nightly builds made it even faster in some places and slower in others--not surprising since it's still in development. Scrolling was drastically worse, but I'm told that's currently in flux.
I have to hand it to the Firefox team. They're not taking Chrome lying down. I've found no real issues with running 3.5 so far and it's a bit of mystery to me (which is to say "I haven't researched at all...") why Ubuntu 9.04 isn't upgrading folks to it. I'm really looking forward to seeing 3.6 stabilize. The Javascript and layout performance seems really good in my use so far.
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