IE9 is still in Beta, and thus it's inadvisable to use it as a Primary option right now as your WP.com Browser. There was something out recently about IE9 and WP not being fully compatible yet (including the Widget issue), as well as some other major sites.
The way many people customize their Blog layout combined with WP's Interface, things are bound to 'break' more-so than usual.
With IE9 implementing a lot of new features, it'll take sometime for it to be worked out fully, and exit Beta.
Which is why I suggested above for aforkandtheroad to give it a test in FireFox and/or Safari and see if he encounters the same issues (which I think he may not). :)