I updated this morning with the inertial scrolling on my macbook air rev. C. I believe that while using the inertial scrolling my temps go up significantly. Would appreciate any feedback from those who are using this new update. I think the temps remain as before except when I use the inertial scrolling. But if I use it for a moment or two the temps spike. Perhaps it is a cpu intensive process. I also note that normal scrolling seems a bit more jittery.