Orac, I think we are still talking about different things.

You are talking about virtual particles; I was thinking more along the lines of the real particles of which the Universe is made, re-arranging themselves over time.

Think the divided box of gas which starts with all the molecules in one side (lowest entropy), but gradually the molecules make their way through a small hole so that they are evenly distributed between the two sides.

Once equilibrium is reached, any further movement through the hole will lead to lower entropy. There are those who maintain that, given enough time, a closed system could/would return to lowest entropy; even if only for a brief moment.

There never was nothing.