Research in Motion Announces Significant Management Changes, Future Guidance

Research in Motion says challenges are significant. Company says there is weakness in US smartphone business. RIM says it is reviewing licensing, other ways to leverage the company. The company is searching for a single COO. Balsillie resigns from the board. Jim Rowan will leave the company. Yach retires. CTO will retire. Company will not give quantitative guidance. RIM says challenges are, overall, significant.