LOS ANGELES (TheWrap.com) - Britney Spears found herself in the middle of some silly drama almost as soon as she debuted as an "X Factor" judge. TMZ.com reported that Spears walked off the show's set during auditions in Austin when a contestant performed a not-so-great version of her song "Hold It Against Me." Spears tweeted in response: "#Britneywalksoff??? LOL was just taking a little break people. I am having the BEST time!!!" The pop star debuted as a season two "X Factor" judge alongside fellow newbie Demi Lovato and returning judges L.A. Reid and Simon Cowell. ...