Nokia is replacing Chief Executive Olli-Pekka Kallasvuo, who proved unable to address the phone-maker's loss of the smartphone crown in the last few years, with Stephen Elop, formerly of Microsoft Corp. Nokia has two main issues to address: a steep loss in earnings and a market share in leading edge mobiles that is being assaulted by iPhone/Android/RIM. Its share price is consequently taking a beating. "My role as leader of Nokia is to lead this team through the period of change, take the