My laptops have to work for their keep and tend to get rather banged up with time. Now, the little LED ring on the charger plug did not light up when I plugged it in. Weird, I thought and jiggled it. No reaction. So I looked at the transformer block and indeed the wire insulation looked rather worn there. A bad connection? I jiggled the cable. Hmm, it's rather warmish, it's…actually emitting smoke! I quickly unplugged the lot. So, worn-through insulation and a consequent short-circuit. Nothing doing, scrap the transformer. Then on to eBay to find a replacement (try to buy a brand new one for an end-of-lifed model from Apple Store, not a chance). I located one in Hongkong, and bought it there and then for a quite small sum. Unfortunately this meant the delivery took some time, but today it arrived. I'm a bit suspicious: while there is an Apple logo on the box, the plastic doesn't feel quite Applish and there is no LED ring on the plug, so possibly it is a pirated copy, but it seems to work and my laptop is up and humming again. For the moment, until the disk gives out or something else burns.