The last time I met a Blackberry boss it ended rather badly. Eighteen months ago Mike Lazaridis, then co-CEO of RIM, took exception to a question and terminated our encounter. So I was very grateful that Thorsten Heins, now in sole charge, agreed to meet me this week and give me so much of his time. He took over in January, after Mr Lazaridis and his co-CEO Jim Balsillie stepped down, battered by the crisis at the Blackberry company which probably explained the tensions of our interview the previous spring. With its share of the smartphone market heading south and investors agitated about the precipitous fall in the share price, Mr Heins faced an unenviable challenge. When I asked him how much progress he made, he took me through a list of management changes and restructuring initiatives.