For me, Firefox 4 stumbles at the first hurdle
https://news.ycombinator.com/item?id=2365841So with the problems I'm having with Flash under Chrome I've succumbed to the hype and installed FireFox 4. Opened up HackerNews, tried to login, and failed.
If I type a deliberately wrong password I get the "Bad Login" message from HN. If I type the password I think is right I don't get the "Bad Login" message, so it probably is right, but nor am I logged in. I get the orange bar instead of my familiar and comforting deep purple, and at the top right I get "login" instead of my username.
So I'm back to Chrome.
Just thought I'd report on the experience. If I thought there'd be any mileage in doing so I'd start looking for somewhere to report it, and provide as much feedback as I reasonably could. If it were one of you peeps I'd be helping you debug.
But I can't see any way to start that process at all, so I'm not even going to try. And there's a data point for you. If you screw up, make it easy for your customers to help you, and they will. Be thick-skinned enough to cope with the crap, and among it there'll be gems to help you.