That's incredible! I figured out I could pause, close, and restart renders on my own. Forget render to disk, I have to restart my computer. Oh well, what is filling up the screen now that I restarted the render reminds me of the mac background, all abstract-looking because it's only the top left corner of the whole image. The timer actually told me it would be through in less than two hours. Realistically, that is probably how long the second pass will take, then it has two more to go and the first pass only took 38 minutes.