As you may know, the PSN services have been down for the past few days now meaning no online gaming over the Easter weekend. Sony have released an update on the issue, indicating its a problem with the network infrastructure. Sony are working around the clock to restore service, but it could be a few more days before the PSN is up again.
Official Statement:
We sincerely regret that PlayStation Network and Qriocity services have been suspended, and we are working around the clock to bring them both back online. Our efforts to resolve this matter involve re-building our system to further strengthen our network infrastructure. Though this task is time-consuming, we decided it was worth the time necessary to provide the system with additional security.
We thank you for your patience to date and ask for a little more while we move towards completion of this project. We will continue to give you updates as they become available.