Hello, how are you? I have a late-2013 Retina Macbook Pro 15" with dGPU. I use it everyday at home, office and college, and when I'm switching places, I just close the lid and put the computer in my backpack. The notebook nearly never overheat when I'm using it, it usually feels cold to the touch, and also, in most cases when I get it out of my backpack, it is even cooler. However, about 4 times since I got my computer on january 2014, when I was going to get my macbook out of my backpack, it was really, really, really hot! I mean, so hot I hurt my fingers to get it out and place it in the desk. Every time this ocorred I waited until it cool down to use it, but I'm really worried that maybe the device will get damaged sometime. Is there something I should do before closing the lid (besides closing the apps)? Is there some setting I can configure to avoid it? Thank you so much. Best wishes.