Sony has reminded European PlayStation 3 users that PlayStation Network will be down for maintenance on August 11.
The service is slated to be down from 4:05pm through 2:00am BST Friday morning. PSN account management and registration will be offline during the maintenance, as will the PlayStation Store. The blog advises those who wish to play online to sign into PSN before the maintenance begins.
So, if you can't get into PSN, don't worry - it's not another hacker attack. It's scheduled downtime.