There is a massive number of unsold inventory created by Research In Motion sitting on the shelves across the world. This includes Blackberry phones and PlayBook tablets. The total value of these unsold devices could be over $1 billion, which puts RIM in a tough position when it comes to their financial results for the next quarter. In March, RIM had to write charges of $485 million and $267 million in December and March, respectively. This was to write down the value of the PlayBook and BlackBerry inventory. In June, the company will have to place another massive write-down. We most likely will not see a full $1 billion write-down in June, but a lot of people have stopped buying BlackBerrys until the BlackBerry 10 operating system is released.