On my second macbook and notice a difference in this one as opposed to the first one (although in all fairness i didn't use my first one all that much as i had to return it because of bad vibrations). I have no programs running and all I'm doing is lightly browsing the web (craigslist, macrumors, gamefaqs). My temps are 42C and approx. 1801rpm. I think this is normal, but my palmrest really warms up. Not to the point I can not use the notebook...just wondering if this is normal...