I dont have a clue why people have such issues with this.I have been using AMD since 2002 with out any issues that haven't been caused by me.
I just upgraded from my 6950's to 7950's,used the AMD uninstall utility,restarted,installed the 7950 drivers and all works fine.CCC works fine and opens everytime.Even Crossfire works great.
I have never,will never and have never needed to use any driver cleaner utility.
I even went so far as to uninstall an AMD card,install an Nvidia card(which only lasted 2 hours)uninstall the nvidia and install a new AMD card without any driver cleaner utility,just the add/remove utilities.No issues whatsoever
I find that people overcomplicate things just cause others say you need to do it.
Like they say:sometimes the simplest answer is the right answer.
AMD Phenom II 1100t @4.0Ghz /Asus sabertooth 990fx/2x Gigabyte 3G 7950's in crossfire/500G samsung 840 ssd/16G G-Skill Ripjaw 1600/2-samsung 24" monitors 1920X1200/Corsair AX1200W psu/W7 pro 64,G19 keyboard,Roccat kone pure mouse,Cooler master HAF932,Corsair H100i water cooler,Zalman ram cooler.Sound Blaster X-Fi Titanium Fatal1ty Champion Series,Logitech Z5500 speakers,Roccat Kave 5.1 headset.