[UPDATE: 4 p.m.] Sony on Saturday confirmed that an "external intrusion" forced the PSN outage. For more details, click here.
[PREVIOUSLY] The PlayStation Network is down again, and this time it could be a matter of days before it's fixed.
The network has been down quite a few times in the past few months, but until today the problems have only lasted a few hours. Today's outage is seemingly more severe than the other latest problems, though there is always a chance things will get fixed sooner rather than later.
From The PlayStation Blog:
While we are investigating the cause of the Network outage, we wanted to alert you that it may be a full day or two before we're able to get the service completely back up and running. Thank you very much for your patience while we work to resolve this matter. Please stay tuned to this space for more details, and we'll update you again as soon as we can.