On March 1 the PlayStation Network will be down for all day for some maintenance.
Starting at 8:00 A.M. PST and ending at 10:00 P.M. PST, this maintenance will automatically sign users out who won't be able to sign back in until it is completely done. No one will be able to play online or access the PlayStation Store, Home and Account Management; every PlayStation Network related service will be down, including Sony's PlayStation Blog won't be available according to Sony.
I hate tech days