Research In Motion's (RIMM +1.9%) estimates keep heading lower. The latest to cut is RBC's Mark...

|By:, SA News Editor

Research In Motion's (RIMM +1.9%) estimates keep heading lower. The latest to cut is RBC's Mark Sue, who thinks RIM will sell just 9M BlackBerrys in the May quarter, down from 11.1M in FQ4. Sue thinks RIM is in danger of seeing its global smartphone share fall below 5%, and that its loss of scale will lead to further operating margin erosion, with cash burn possible next year.