The problem with this film was the poor acting by the "bad guys"

With the exception of Clifton Collins Jr, the "bad guys" in this film simply did not have enough "menace" to make their decisions and actions credible. I thought that Chiwetel Ejiofor performance was particularly poor , and as a central character to the plot, this undermined the suspense in belief that was required by the audience. I think many of these actors should stick to playing "good guys". Anybody agree?