Tom Cruise is not a happy camper because his new film "Lions for Lambs" did not place in the top three at the box office over the weekend.

"Tom is not happy," says a source close to the actor. "Lions," Cruise's first release since "Mission Impossible: III," is also the first film to come from Cruise and Paula Wagner's United Artists studio.

"Tom wanted to really hit a home run with his first United Artists movie," says another source. "It was more about how the industry was going to view him than the moviegoing public that Tom was worried about."