Hey hey!

Look at Sony terms and conditions clause 19 that lists their liability.

Website http://www.sonyentertainmentnetwork.com/gb-en/terms-of-service/

As far as I can tell PlayStation Network can behave in any imaginable way, may not work or prevent other actions like purchases, and the company is left free of any warranty. Nice!

That is, if I understood correctly. Here's a snippet:

As far as permitted by law, we are not responsible or liable for nor do we give warranty or representation in relation to:
(i) The quality, functionality, availability, completeness, accuracy or performance of the SEN or its services and/or products;