Disclaimer: I work on the IE9 Team

I can't overemphasize the need to submit feedback through the proper channels, namely connect.microsoft.com. We continuously process copious amounts of feedback (positive, negative, neutral, the whole gamut ...) and actually act upon them even if our actions are not immediately visible to the bug filer. Please, the IE9 Beta is a Beta for a reason - it is neither perfect nor complete. We are working daily to make IE9 more awesome ... and that's easier if the feedback comes in through the right channels.

Note that I'm not asking you to not make blog posts or reddit posts or whatever; just don't skip on the connect bug report - that will get our attention for sure. Thanks! :-)