Hey all. My fan has been very loud lately at its default setting (1000rpm). It sounds like it is skipping or hitting something inside. I took it to the apple store and they said something is causing it to over work and i should reformat the computer... which i know is incorrect. Does it sound like i need a new fan? I do a lot of photoshop work and my computer gets up to 190+ degrees often, so the fan gets a lot of work! thanks! oh, i also notice when i speed it up to about 1400rmp, the skipping stops. i have a macbook pro core duo, 17".