The PlayStation US Blog is aware of this:
We’re aware certain functions of PlayStation Network are down. We will report back here as soon as we can with more information.
Thank you for your patience.
One has to wonder if this is a technical screwup with the servers or an attack by the infamous Anonymous hackers, whose attitude towards the Sony/George Hotz legal settlement has been “unforgiven”.
Stay tuned.
[UPDATE: Kotaku is reporting Australian PS3 owners are having problems, too.]
