Posted in Mac Hardware but perhaps better suited here! Not sure if its the adapter or the lead thats at fault but, mine almost set on fire! Nothing was plugged in to the adapter, it was just connected at the wall and left laying on the floor like I'm sure a lot of people do... Its an amazon USB lead and the adapter was purchased direct from apple. I'm now looking for answers from these companies. As you can see, its melted and completely fused the two together!