...and of course I had to try it out. EPIC FAIL!!
Mind you, IE 8 was the default (though I never used it- too cluttered for my tastes). I prefer the UI's of Opera, Chrome/Safari. Anyway, saw where IE 9 was going to be a bit more streamlined and waited for the full beta (didn't want the dev build version). Installed it, it updated itself, and crashes instantly upon launching.
It won't allow me to uninstall it- so when I tried to reinstall, I get an error message saying that what I already have is newer than what I'm trying to install. Attempted to download IE 8 from Microsoft site, and I get the same message.
At this point I'm thinking I have to either let IE9 mock me quietly or move my important files to the cloud and break out the restore disks...