oh my goodness I have the same problem, they are bone china/porcelain does that maybe make the difference?

We are having steak tonight and everyone is using knives and I can't take it anymore. These plates just squeak all the time. Why is this--what material or finish causes this-- and more importantly, what material or brand of plates can I buy that will not squeak so much?

(side note in case I sound like I should be in the Health and Medicine thread for sound phobias--it's not all plates, it's these particular plates. I want to get rid of them but don't want to make the same mistake when I buy replacements)