I have a trouble with a trackpad button of my two-day old MacBook (2.0 13 white), which is sometimes irresponsive to my click. I experience that there are some (less than 5 %) missing clicks. I never had this trouble with other Apple laptops. I would like to know how often this problem happens on other MacBooks. I am using the left side of the click (right side is well responsive, but I do not use the side). I previously owned three Powerbooks (G3, G4 15.4, G4 17). I know how to click the buttons. I really do not like the missing clicks. The representative in the Apple store did not agree with me; however, I tried to demonstrate the missing clicks. I believe that I showed at least four times out of around 250 clicks (he still did not agree with me; why not?). Clicks are very personal habit. The representatives could not recreate the problem I have with the MacBook. Anybody can advise me?