...it so happened that Britney Spears walked of the set on her first day of being judge on X factor, apparently she cannot handle the stress and as a result of this the next three contestants had to do an audition to an empty seat. She got angry after one of the contestants butchered one of her songs 'Hold it against me'. A source said she just needed a break (yeah right!). Here is hoping the stress of being a judge will not trigger another mental breakdown...