Latest on the blogs says they got "hacked"
An external intrusion on our system has affected our PlayStation Network and Qriocity services. In order to conduct a thorough investigation and to verify the smooth and secure operation of our network services going forward, we turned off PlayStation Network & Qriocity services on the evening of Wednesday, April 20th. Providing quality entertainment services to our customers and partners is our utmost priority. We are doing all we can to resolve this situation quickly, and we once again thank you for your patience. We will continue to update you promptly as we have additional information to share.
And if its related to Amazon cloud, I guess,Amazon will lose customers now.
I hope that somebody with the inside info, will do a writeup about this attack on cloud based services. And if it was intentional to do it in sync with the Skynet dates.