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.