Update: Sony’s just posted again to say this issue may not be fixed for “one or two” days.
Original: Sony has posted the following statement up on its blog regarding the PlayStation Network outage.
As you are no doubt aware, the current emergency outage is continuing this afternoon and all Sony Online Network services remain unavailable. Our support teams are investigating the cause of the problem, including the possibility of targeted behaviour by an outside party. If the reported Network problems are indeed caused by such acts, we would like to once again thank our customers who have borne the brunt of the attack through interrupted service.
Our engineers are continuing to work to restore and maintain the services, and we appreciate our customers’ continued support. For further information, please refer to updates on PlayStation.com, here on PlayStation.Blog and via our @PlayStationEU twitterfeed.
The Network has been down since late last night, and although Sony doesn’t know the exact cause, an outside attack should probably not be ruled out, especially with a busy weekend for the Network ahead.