I too have had this issue, it seems that it doesn't matter what batch you get it still happens.
I got my pre-order after waiting a whole month and the first night I had it I noticed the screen doing this and it happened twice the first night. I decided that I would take it to the apple store but decided to wait to go but then the next morning it happened again and it was enough to make me go to the store. When I got there they made me make an appointment and so I did and came back an hour later and the guy switched it out for me no problem. The very next day I noticed my phone doing the same thing..
I was ****** so I ended up making an appointment again and getting it switched out yet again. I've had three iPhone 5s in the last four days and this is my second day with this new one, I'll see if this one starts doing it too, if it does I may just get it switched out as well.