Realistically, the flashes of lightening should come before the sound of thunder. Simply put, light travels at a faster rate than sound. This might actually give it the feel of a real thunderstorm since it feels misplaced to me.
Yeah, I see what you mean, but I can imagine if in 1.6, Notch updates the timing between lightning and thunder instead of something else, there will be a lot of angry people.
That is all, thanks.