Sure you'll find more (issues) on Microsoft's forums. I don't find it as user friendly as prior versions, though have become used to working around irritating things.
Am using Chrome more than before (as a result of IE9 not being a favourite), but there are some things Chrome doesn't handle well, like copying / pasting usernames & passwords. Most need to be typed, unless (I find) Chrome has allowed me to save these beforehand.
i should imagine if most people have ie on this forum, it'll be ie9.
it's given gary some issues with nedbank business banking.
otherwise it seems far better than ie8.
I use IE for my development work (Client's corporate network only run IE) and one thing i do like about IE9 is its load speed is much better.
I run chrome and FF for my personal browsing.