Nokia could oust its CEO if the company doesn't turn its performance around, multiple analysts said today. Investors are upset that Nokia hasn't been able to produce a true iPhone rival or take other steps to improve its financial health and are thought to be blaming company leader Olli-Pekka Kallasvuo for much of the trouble. Both Alan B. Lancz & Associates and MKM Partners believe Nokia's board could be under extreme pressure if there aren't signs of improvement by the summer, when the N8 ships.