This is bad: since yesterday, PlayStation 3's around the world have been unable to function online or, in some cases, offline. It's an issue that's effecting the original PS3, not the PS3 slim, but it's pretty bad nonetheless.
All online games are unable to be played, as are PSN games that require DRM authentication from servers. Even some offline games like Heavy Rain are unable to be played.
Sony is aware of the issue and claims to be working on it, but the consoles are still down as of this writing.