I got my new 15" unibody MBP friday - while I love the machine, I do not love the increase pressure. I find myself pushing much harder even after the audible click to get the press to register. I called applecare and he indicated this was normal. This is my first unibody MBP, I had a 2007 (october) MBP that had the separate click bar - never required more pressure than it took to get the click. Is this normal?