Somehow I was made aware of the IE9 Beta and volunteered to test it out for Microsoft on one of my three work PCs.
Huge mistake.
Avoid this program for now. It crashes CONSTANTLY. It has trouble running anything with streaming content, both audio and video. It has trouble with Flash. It has trouble with auto-refreshing pages. It has trouble with Doublesight and NVidia drivers. Etc.
I also don't like the looks of it. They've reduced the buttons and such even further to maximize web page view space, but I think they're now negatively affecting functionality.