RIM signaled deep trouble with its smartphone business Thursday night with lowered guidance for its spring quarter end this May. It now expected its BlackBerry shipments to be at the "lower end" of the 13.5 million to 14.5 million it predicted March. Profit would be much lower at $1.30 to $1.37 per share instead of the expected $1.47 to $1.55 it mentioned just last month.
