See this, its a portuguese website
http://gameover.sapo.pt/article.html?id=55774
I'll translate it with google.
"The group of hackers responsible for recent attacks on sites threatened by Sony that the worst is yet to come.
After releasing a video that proves that the problems experienced in the Sony Website and access to the PSN were its responsibility, the hacker group Anonymous PlayStation Lifestyle assured that the worst is yet to come, being prepared to be "big surprises" for the Japanese giant.
"So far, Sony has only felt a few touches and some bites. A few simple greetings to know that we are coming.
"Have no doubt, what we saw today, and thought to be frustrating, it is mere preparation for what is to come. As we said, wait for us. Underestimate us will be a mistake."
The Anymous also stated that it is fully aware of the negative consequences of their actions for the users, considering them as "collateral damage."
"In this case, we can consider the users as side effects. We are fully aware that with our attacks, we are not friends or allies to form among consumers.
"This is an unfortunate fact, because people do not understand that we want to support the objectives we are trying to achieve.
"I call out to consumers, before we judge others, to lose any time to try to understand."
The organization of these hackers want to take revenge reprisals of the process that the company filed against George Hotz, responsible for the breach of the PS3, and other famous hacker known as Graf_Chokolo.
Remember that the PSN yesterday was in a state of maintenance, which suggests that it may have been reached. The problems also have extended access to the official PlayStation blog."