I have never heard of this either. It doesn't sound logical. I echo what eveyone else said - your baby sounds normal. She may be different from your other ones, but all babies are different. I would have suggested that maybe she has an intolerance to something in your diet, however, I think that Barb is right - it is too early to tell if this is an issue or not. I agree with "wait and see", as from what you described, everything sounds normal.