Issues with the power adapter were actually discovered last month and according to the company, they had warned customers not to use the adapter until replacements could be provided. However it seems that they might have discovered that it is more dangerous than previously thought and have initiated a recall.
In a post on the CPSC’s website, it reads, “The power adapter casing can break when plugged into an electrical outlet, exposing its metal prongs, posing an electric shock hazard.” They also note that there have been four reported incidents, but thankfully no injuries have occurred. “Barnes & Noble has received four reports of the power adapter breaking or pulling apart exposing the metal prongs. No injuries have been reported.”
The company has since published a special website in which users can find out the serial number of their tablet and request for a replacement power adapter, so head on over if you’d like to send your unit back (which you definitely should).