The very MacBook from my signature has suffered three problems since I woke up this morning. 1. The first thing to happen was a crack in the plastic in the palm rest area; a common problem apparently and one that Apple will happily deal with as it is within the warranty period. 2. It is now completely refusing to connect to any wi-fi network and I have tested it for some time now with no avail. 3. It's failing to recognise one of the USB ports. Looks like another call to Apple... But it really makes you wonder what the chances of this are.