PlayStation Network will be offline tomorrow for European territories only. The maintenance will begin at 4pm March 9th and will last until 3am the following morning, March 10th. During that time you won’t be able to access the PlayStation Store, via either the PSP or the PS3, the PlayStation Network Account Management or the PlayStation Network Account Registration. If you wish to play online during the maintenance, make sure you sign in to PSN before 4:05pm Wednesday. Source: EU PlayStation Blog