I saw this the other day. My mum told me the son of someone she knew had a socket explode, to which I replied WTF! Owning an iPhone 5 and my mum owns an iPad I was keen to figure out what happened. I looked at both the plugtop that came with the iPad and the plugtop that came with the iPhone 5. They have different fuses. They require different amounts of power. The iPad should not be charged using the iPhone 5 plugtop. The iPhone 5 plugtop has a 1a fuse in it, the iPad plugtop has a 2.5a fuse in it. So on this occasion the lad had tried to charge up is iPad through the night and got rudely awoken!