Sorry in advance if this has already been brought up, I wasn't able to find anything. Besides things like YouTube, and simple flash games maxing out both cores and causing my fan to start blowing at max... screensavers also cause my MacBook's fan to go nuts. Is this just an issue with the MacBooks design... or something I should be fixing? Both me and my girlfriend have the exact same issue. Both of us have GMA X3100 graphics, and this happens with every screensaver. Thanks in advance guys.