Paula Abdul isn't digging the addition of fourth judge Kara DioGuardi on American Idol this season. "Kara and I have known each other for years and we get along great," Abdul tells OK! magazine. "But we tried four judges before and it doesn't work." In the second season, the show had tried DJ Angie Martinez as a fourth judge, before quickly dumping her. As for her future on Idol, Paula is being coy. "It is the last season of my contract," she says, "and I have so many other things I want to do." (PHOTO: WENN)