So I came home from work and plugged in my MacBook to the wall since it was at 18%.. I then notice that the keyboard was getting hot and it was running really slow. Any ideas what could be causing it? It's currently shut down for now to cool off but I'm starting to get concerned because my keyboard has never been that hot before. It was toward the aluminum at the top near the number keys and first row of letters. It's only about 3 years old since I bought it in 2013.