Maintenance for the week of July 13:
• PC/Mac: No maintenance – July 13
The issues on the North American and European PlayStation® megaservers have been resolved at this time. If you continue to experience difficulties at login, please restart your client. Thank you for your patience!
We’re aware of this issue and investigating a fix. In the meantime, you can use these steps to resolve the matter.
As there's already a very active thread on this topic (thanks for the link, @nastuug!), we're locking this thread. You're welcome to continue the discussion over there.