One interesting quirk I found out about this today that had me chasing my tail, so will post it as a FYI - In 6.5 (may be in 6.4 as well, I never ran that version) if you are in Admin Only View mode you will ONLY be shown posts for the current date (like Prune=1)
It took me a while to think of opening up the board to see if it was working after verifying the mod about oh, 25 times or so