Ahh ya, another day another installation
After my uninstall above I wanted to try out Internet Explorer 9 PP3 so I did another install of SP1 (using the DVD this time) then installed IE9 PP3.
I haven't noticed any problems using this build of IE9 besides navigating. Still no favorites, back button, Tools, etc.
I did spin through several sites & noticed that PROnetworks default is "Document mode: IE 9" whereas some other sites are lower, I even saw one that the default was IE 5