At the moment my Core Duo macbook is sitting next to me idling on the desktop and the CPU is at 90 degrees celcius. Surely this can't be normal. It's never been this high before, and it's been like this for the last hour. The fans are going and the temperature isn't dropping. I'm worried it might be the battery because it's been taking a lot longer to charge since just coming back from being fixed for a broken dvd drive. Is this something that's going to require sending in the macbook again? I've already been without it for 2 months in total.