Actually, there was a big brouhaha about this in the last few months. Since the time difference is so great between North America and Australia, it was assumed that the Sydney website would be the first place a person could go to for up-to-the-minute results.
But, in fact, they've decided in the interest of preserving the value of the TV rights to the Games, the website will be updated after the events are shown in North America, nixing the chance of any live broadcasts. Got to love progress.