I haven't deleted any of my families, and I've just done the .04 update to see how it goes. I started a new family after .02 & I didn't notice too much difference at night to be honest. They were still wandering around 'exhausted' and recovered early in their morning hours with naps. I'll see how they go at night time with the .04 update as the read me does say it addresses it. It wasn't a huge problem to me as I played the game their day time, and they really did recover from tiredness quite rapidly with naps.