"Will.i.am was ranting after their set about how arrogant she was acting. He griped that the whole thing had become 'The Fergie Show'," Contactmusic quoted a source as telling the National Enquirer. “He was so upset he said things are going to have to change if he group is going to stay together," the source added.
Last year, it was claimed Will.i.am was upset with Fergie's decision to pursue a movie career while they were trying to make new album 'The E.N.D'. A source said at the time: "Fergie won't commit to a tour schedule to promote the album. Making her movie 'Nine' is her priority now.".