Sony has announced that the PSN will be down for scheduled maintenance tomorrow in both the UK and US. The maintenance will run from 8:00am PDT/10:00am EDT/4:00pm BST, and ends some 16 hours later at 11:00pm PDT/2:00am EDT (on May 24), or 08:00 (BST) on Friday 25th May.
The maintenance will not allow you to access the Playstation Store or the account management sections but you will be able to play games online. You can only play games online if you log into the network before it goes down for maintenance. “Regular maintenance is a necessary part of operating a service such as PSN,” said SCEA. “Thanks for your patience and support.”