Some say that the bubbles (are we talking tiny bubbles or great big ones the size of half an egg?) are the result of over or under mixing.....now, doesn't that clear it all up? I just take a needle and *** the bubbles and bake the bread! I think sometimes greasing (I usually use baking spray) the tops of the loaf makes for a prettier top. I'm not much help but I want to welcome you to the bulletin board.