DON'T TURN ON YOUR PS3
 

MODEDIT: This article gives somewhat of a better summary of what's actually going on, but keep reading the thread, it's quite funny actually.
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http://ps3.ign.com/articles/107/1072875p1.html

PS3s Suffering From Global Network Lockdown

And apparently Sony's website got hacked

http://us.playstation.com/PS3/dearplaystation/

So, unhook your PS3 from the Internet and leave it for now I guess.

You MAY want to remove the link to the hacked site. The source seems to contain a Flash object that might install software onto your computer. Luckily, I have NoScript.

Holy shit,damn I wonder if the PSP is vulnerable to this.

I looked it up elsewhere. Apparently it's just a phishing scam on a couple of their pages.

mine's online right now. no ill effects so far.

I'm keeping it offline just to be safe.

Also

Reading IGN I found a comment about a user name Geo who clams to have hacked a PS3 around the time this went down. This might have been his work as a means to hack the system.

If it is, he'd better hope he's not pretty.

More likely, he's just a wannabe. The article in the OP suggests an issue with the internal clock, which seems a hell of a lot more likely than hacking.

I don't think IGN's comments section is a good place to start looking for hackers on the Playstation Network.

EDIT: Bit Ninja.

Beware, I live.