Numerous setbacks have affected Research in Motion (RIM) in the past year. One of the most significant problems arose with the company's attempt to launch a tablet computer, the BlackBerry PlayBook. Continuing what many are calling a trend of missed marks, RIM announced earlier this week that it would delay a software upgrade for the tablet, originally scheduled for this holiday season, until February 2012.

According to the New York Times, news of the delay surfaced in a blog post by RIM's senior VP for the PlayBook division, David J. Smith. In addition to contradicting the original release date announced by RIM CEOs Jim Balsillie and Mike Lazaridis, the post also stated that PlayBook users would still be unable to use the BlackBerry Messenger (BBM) feature, as had been previously promised alongside other smartphone accessories expected in the update.

The news source reports that the PlayBook has consistently failed to sell in any significant volume, and RIM stated that approximate shipments of the device totaled approximately 200,000 units. This unpopularity has been attributed in part to the device's lack of built-in email and messaging. It can only perform the former function when connected to a BlackBerry phone.

Channel Register reports that an estimated half million PlayBooks are sitting unsold in retail outlets all over the world, even after its prices were cut significantly in several countries.