My keyboard all of a sudden will either not respond to the keys i am pressing (intermittent) or will stay pressed down, thus getting the "iiiii" (or whatever key) deal. NOTHING has been spilled on the computer. Really weird, and just started today. I have to take it in due to dead pixels, so i guess it is good timing. 11 months old, and already a logic board replaced... Any thoughts, or has this happened to anyone?