Playstation Network is now experiencing some technical issues with several of their services according to the PSN Status page. Currently affected are the Playstation Store, Playstation Now as well as gaming and social functions. Sony is warning its users that they may be "experiencing issues related to launching games, applications, and/or social features such as trophies, messaging, or friends list."
Sony hasn't specified what the problems with the Playstation Store or Playstation Now are exactly, only stating that they are "addressing" it.
Stay tuned to GameZone for updates as this situation unfolds.