Note that Microsoft have annonced they are automatically going to start installing the latest browser, even if the user does not want it.
So there is no point in going back down to IE8 or soon you will be back up to IE9.
Note, it is very easy to make IE9 look like IE8, just right click on the grey area at the top and from the menu select "Menu Bar". Then you get you menu bar back.
Note IE9 is also a more secure browser than IE8 so if you go back to IE8 you are more likely to get an attack from a dodgy web site.
http://www.pcmag.com/...0,2817,2397672,00.asp