Hi guys, usually when im at home, my air is connected to an external samsung display. 1.) Based on this article on os daily > http://osxdaily.com/2011/09/14/disa...n-a-macbook-pro-or-air-in-mac-os-x-10-7-lion/ <<< for those who frequently use the external display mode, what is the best way? clamshell mode or use this tip to disable the internal display / decrease brightness ? Does your air overheat when you view a lot of videos, websites and so on? Or like play games like team fortress 2 while using clamshell mode? 2.) Is it safe to leave the power adapter connected to the air and leave my air idle for a few hours or more ?