Playstation Network will be undergoing scheduled maintenance from Monday.
From 16.00pm GMT Monday 4th March through till 3am GMT on Tuesday 5th March, the Playstation store, Account Management and Account Registration will be unavailable.
Trophies will continue to be stored on the system and there shouldn’t be a problem logging in and playing online
In addition, you will not be able to sign in to PlayStation Network from eu.playstation.com.
Please go here for any further information.
(Source: Playstation Network)