Those friends of yours just sound competitive Rory... what's their definition of "sleeping through" anyhow? MCHNs say that sleeping through is offically considered to be midnight (last feed) to 5am for a baby the same age as ours. Also from my experience it's rubbish... babies never consistently sleep through... as I said, there are other reasons for waking up during the night, not just hunger... are your friends saying their babies don't wake when their babies are teething etc? pffft. These are the type of people who say: "my baby is walking/ eating 3 square meals a day/ ready for university"... just nod and smile and say that yours isn't and you'll have just as many grateful mums overhear you and feel better because they have babies that are normal

ETA: that's not to say you can't celebrate when they DO sleep through! Occassionally Niall sleeps from 10pm to 4am. As long as I go to bed at 10pm too it's a fantastic sleep!