Same here - six weeks ago I could absolutely count on two or three hours of peace from DS, but then he just decided not to! I haven't put him down for a nap for over a month - if he does sleep for more than forty winks he won't go to bed until 9pm. Of course, with no nap he barely makes it past 5.30...so that is an issue we are having to deal with. I keep reminding myself that in a few months it should all be fine