Lachlan Murdoch, son of News Corp Chief Executive and Chairman Rupert Murdoch, gestures as he leaves his father's home surrounded by media in London July 20, 2011. Rupert Murdoch has told staff in an email the company is taking steps to ensure serious problems never happen again there and that staff who betrayed trust must be held to account, following a phone-hacking scandal at one of his papers. REUTERS/Andrew Winning (BRITAIN - Tags: POLITICS CRIME LAW BUSINESS MEDIA)