Hello, I have a 15" Macbook Pro Unibody mid 2009 and there is a very discrete shadow in the center of the screen (approx. 0,5 cm). In the center of this shadow are 3-4 stuck red pixels (hot pixels). One of them is constant, the others appear occasionally (when I move the lid for example). If I knock in the lid or gently press the screen with a cloth, the constant stuck pixel disappears but reappears after restart. I used JscreenFix and a widget that rapidly changes color but...no success. What causes this shadow and stuck pixels? They are not disturbing and I can live with that but could they progress in time and affect all the display? I can't use my Apple warranty as I work in a different country.