X Factor crisis as illness lays low Simon, Mary and One Direction's Harry... and Cheryl's feeling under the weather too

By PAUL REVOIR and SARA NATHAN Looking a bit peaky: Cheryl Cole arriving at the X Factor studios this morning in north-west London. She went home early yesterday suffering flu-like symptomsCheryl Cole exhausted as Simon Cowell battles fluMary Byrne, Matt Cardle and Harry Styles have lost voiceCher Lloyd's meltdown as she lashes out at camerawomanThe X Factor has been thrown into crisis as Simon