Have just been reading this article (apologies if there's already a thread on this).
Personally I don't have anything to compare with, as my DS was (still is) breastfed, and nearly all my friends breastfed their babies too. Some of their babies are more challenging than others. When I saw the headline I thought it was going to be about breastfed babies needing fed more often/not sleeping for so long, but it seems it's more about them being less happy. Mind you in the comments it says this study was part funded by Mothercare.
What do people think?