To your question. "Stopped! Render time..." means that someone has interrupted the rendering. Ppushing a mouse button probably by accident (thats why i take away my mouse when i am rendering big files). If it looked finished, lucky you. It means the render was nearly finished anyway. Rendering to screen is limited by the resolution of your monitor (as far as i understood). And wether rendering to disk is faster or not - others can tell better than i can. I don't have the feeling really, but i haven't done some real tests.

One day your ship comes in - but you're at the airport.