Looks like the SOE downtime was more of a precaution, they are stating no customer data was compromised on their side.

One strange part from the Q&A yesterday:
Originally Posted By: Sony
Moving forward, we are initiating several measures that will significantly enhance all aspects of PlayStation Network’s security and your personal data, including moving our network infrastructure and data center to a new, more secure location, which is already underway. We will provide additional information on these measures shortly.

Odd that they feel the need to physically relocate where the network is hosted.