I have this model Macbook Pro: http://www.everymac.com/systems/apple/macbook_pro/specs/macbook-pro-core-2-duo-2.4-15-santa-rosa-specs.html Whenever I attach my Edirol UA-25 and use it with virtual DJ my temps reach between 80-90c with the fans at full speed. Compared to 48c when using the headphone out on the onboard soundcard. It also does this with a M-Audio Audiophile firewire card. Both cards are powered by the mac and cannot be used otherwise. Does anyone know why the temperatures are so high and if it can be resolved?