Kyo, the big problem with this proof, in my eyes, is that it doesn't come close to proving the existence of god. It does nothing of the sort.
All it proves it that there was some cuase external to the universe.
So what? How does that cause equate to God?
Why do people then take this "Ultimate Cause" and project onto it, such inexplicable characteristics as consciousness, morality, loving creator, all powerful, all knowing, bestower of imortal souls, etc etc etc...
I will be perfectly happy to accept a cause of our universe, external to it. Doesn't bring me any closer to believing in God however.
Al] thread I started on this subject