32 bit I'm not entirely sure, however here's my two cents. The thing that bothers me the most about ATI drivers is that some drivers work perfectly fine for some people, meanwhile the other half are having display crashes, FPS loss, etc.
A lot of people will say "Oh, it's PEBKAC they're definitely using driver sweeper, etc" however it's really not. Sure PEBKAC is generally the issue with graphics drivers, but in this case it's not. It's just poor driver support.
When I built my sig rig (not even 3 weeks ago) I installed all of my drivers, etc. The driver I always install last is my graphics driver. I wanted to give 11.1 another chance, so I installed it, everything went okay, restarted. I booted back into Windows and my resolution wasn't native and CCC wouldn't launch. It was not in the processes, etc, BUT if I manually went to the CCC exe and went to launch it, it told me my video card wasn't supported.
So I did a system restore, reinstalled all of my windows updates, etc. I installed 11.2, everything went perfect up until a few days ago. A few days ago I was browsing OCN and listening to music and boom, display driver crash. Did flash crash it? Or did it just crash on its own. I'm not sure, but either way I disabled both hardware acceleration for Firefox and Flash.
Needless to say, it's not always PEBKAC... ATI has been making very poor drivers recently. That's my opinion.