Nikon have recently admitted that some D5000s have a fault, and that cameras within a certain serial number range should be returned for repair:

an electronic component related to power control in some Nikon D5000 digital SLR cameras does not meet factory specifications and may, in certain circumstances, prevent the camera from turning on, thus preventing operation of the camera.

In the USA, Nikon's advisory states:

Service related to this issue, including the cost of shipping affected D5000 cameras to Nikon, as well as their return to customers, will be free of charge.

However, here's the UK version:

Nikon covers the cost for repair (preventative measure) and return shipment to the consumer.

In other words, we loyal Nikon users in England have to pay from our own pockets to send the camera to Nikon to be fixed, even though the camera is faulty. Come on, Nikon Europe! Step up to the plate and do what's right - send out pre-paid shipping containers to all the affected users!