I have had my Macbook since February this year and have noticed lately that the bottom of the laptop his getting a lot hotter than normal. I'm not doing anything different than I was before. I am simply surfing the internet. I hear the fans running now and I didn't use to hear them before. Is there something I can do to resolve this? I purchased one of those laptop boards with the built in fan to try and cool the laptop down but I can still feel excessive heat dissipating (which I guess is a good thing). Any insight would be appreciated.