Sunday morning, 9am, at the London offices of music svengali Simon Cowell, and the X Factor team was delirious. It was not just the lack of sleep, it was the fact that the public chose a good winner. Twelve million watched the final on Saturday night, an astonishing 8 million voted, and Alexandra Burke duly won. Burke, they say, has not only got the X-factor, she's got the L-factor. Cowell ...