Hmmm...velly intellesting. Then why are there sort options for this? Or, perhaps our friendly neighborhood developers could wire this option into the program?
It seems to me that when going to a topic with several posts, people would most want to see the more recent at the top...especially if they're regulars...
Since most of us read "top to bottom" when viewing a list, it makes more sense to put the new posts at the bottom. That way, you jump to the first new post and scroll down. If the new posts are at the top, and there are several of them, you're reading them in reverse order.