I was mortified to discover that all four of DD2's Avent feeding bottles had cracks - I have no idea for how long. Obviously I've now bought new ones, but is this normal? I don't remember this happening the last time and I've only been using them frequently for two months (although some were used for DD1 also) I have been washing them in the dishwasher though - could this be the problem? Could any harm have been done to DD2? I have a vague recollection that some bottles have a not very nice chemical that can leach out if the bottles are cracked. Oh God - can't believe I didn't notice sooner. I knew I shouldn't have stopped bf - rueful