In my cubicle, my setlist from March 8th 2010 (Denver) shows the first three songs underlined, then 6, then four, four, and the list ends with Wanted and Prayer (audible being "Runaway" in there)
Maybe it's break/talk points in the show? I've always wondered this as well.

If the Bahamas setlist is any indication of Jon's current headspace, I am very excited for the new stuff. Even if he goes political again with "Be the Revolution" type songs, it's MUCH MUCH more relevant now than he was TRYING to make it be with "The Circle" and "WAN". Certainly in America anyway. Just a thought.