My MBP mid-2010 heats up and the fans almost immediately kick in whenever I watch YouTube videos especially 720p or 1080p. It doesn't take long before the fan goes up to 5000rpm or more which can be quite distracting along with the heat on the left side of the laptop. I've had my MBP for 1.8 years and I've noticed this heat/fan problem get more serious in the recent months. Processor 2.4 Ghz Intel Core 2 Duo, Memory 4GB 1067 MHz DDR3, I'm running 10.6.8 Snow Leopard. Are there any ways to fix this? Downloaded videos .avi or .mkv on VLC work fine without heating up the machine too much. Other than that, my MBP works well still.