I downloaded Firefox 4 yesterday (and apparently I’m not alone, Mozilla have already racked up over 7 million downloads at the time of writing) and have been genuinely impressed by a) the speed of opening from a cold start and b) improved page load time.
Of course I’ve not done any benchmarks so I’m not entirely sure how much of this is psychological (ooh shiny new product must be faster, that sort of thing) and how much is actual, but there we go.
My biggest gripes so far:
- Support for browser.tab.tabMaxWidth and browser.tab.tabMinWidth has been deprecated. It took rather a lot of Googling to discover that a) it now needs to be done in userChrome.css and most importantly you need to set browser.tabs.animate to false otherwise you end up with ghost tabs. See: Firefox 4 Beta: Tab width CSS for more information
- You can’t trial personas by hovering over the images on the Persona page now. You have to install, and then remove if you don’t like it. It’s not a major pain in the butt, just a bit of added inconvenience.
Err, and that’s about it. Not bad so far.