So. 13" MBP 2013 model that is about 6 months old. As of a week ago acting a little strange when charging. First thing I noticed was that is was charging very slowly and actually losing power whilst plugged in if I tried anything taxing - like plugging in a phone or testing the CPU. Second symptoms is that when the charger is plugged in the trackpad is not working 100% - doens't respond to every touch and mouse jumping around abit. Third symptom - Charger getting VERY hot and kaing a buzzing noise. Can anyone diagnose this ? Charger problem ? Battery problem ? Both ? Whatever way you cut it ti needs to go back to Apple methinks!