PlayStation network back up after three-day outage

Sony has fixed a software glitch that prevented older models of its PlayStation 3 console from accessing the PlayStation Network for three days.

A bug in the clock on ‘fat’ PS3 models caused the network to go off the air since Sunday, denying millions of the network’s global users access to online gaming, saved-game data, and high-score details.
 
Sony initially advised owners of fat PS3’s not to use their console. “Doing so may result in errors in some functionality, such as recording obtained trophies, and not being able to restore certain data.