Wow, the CAT crew needs to add that utility to ATi drivers, that is SWEET! Especially considering that many, many crashes are related to crappy PSUs.
rasta
P.S. Here is your PSU rating:
It looks more than adequate. Check all your connectors for tight fit, and make sure your video card is plugged in, too! If all looks rosy, your PSU may be failing. How old is it? Many follks recommend taking the cover off and blowing the dust out every few months to avoid internal shorts.
Good luck!