The CBS Sunday Edition podcast had an episode on the subject of BlackBerry overuse (which you can listen to via iTunes — it is the episode from February 24th) with Carleton University professor Linda Duxbury. They talk about the potential for rude uses like checking email during a meeting or other conversation, and Minister Fadden’s moratorium on at-home BlackBerry use. According to Professor Duxbury, the impulse to obsess over your BlackBerry even while off the clock has actually caused an increase in hours worked per week, from 47 hours to a staggering 71. All in all, it’s a very interesting segment. The BlackBerry portion of the show starts at 4:20.