My back MB i got on friday is running around 60 when idling and general browsing on the web, but can get up to the high 70s when i push the CPU a little. I havent pushed it for any extended period of time yet. I think that this around about normal. Also, no mooing or any noises for that matter coming out of it. Sorry if this questions stupid, but this is my first Mac...is there anyway to make coreduotemp a widget?