Yesterday, I opened the Air and changed the thermal paste on the processors. First, there was a ton of paste basically suffocating the processors. I cleaned both processors and the cover very carefully with alcohol and Q tips. Then I reapplied very carefully a thin layer of silver paste. I put it back together and turned the laptop on. At first I could not hear the fan running so I thought I messed something up, but the temperature of the laptop was too low to activate the fans. Next I turned on Coolbook to monitor the temperature. I am running videos and other applications I usually run and the computer is working at an average of 70 degrees Celsius. This is recorded while playing videos at double speed. I am very happy with the changes so far. I have not had a core shutdown since the updates from Apple were installed and the thermal paste changed. I hope this solves the problems because I like the size of the Air.