Its been a while but my first macbook charger came close to setting a fire I think. I smelled something as I passed my bedroom, and found that the computer charger was smoking. I unplugged it from the computer/wall and put it in my sink and things were fine, but it definitely freaked me out. I haven't had similar issues since, but every single one of my dozen or more since have frayed _very_ quickly relative to other cords/chargers I use.