The PlayStation Network maintenance announced earlier today has been completed and everything is back up and running properly.
Thank you for your patience.

Parts of PlayStation Network will be down this morning for regular scheduled maintenance. We’ll update you here on the PlayStation blog when everything is back up and running properly.
We apologize for any inconvenience this may cause.

We are aware that some people may be experiencing difficulty in accessing the PlayStation Home beta at present. This is due to overwhelming demand for the service as people access Home for the very first time since it became Open Beta and appeared on the XMB.
While we prepare solutions to ease the problem, [...]

During the review process prior to the release of LittleBigPlanet, it has been brought to our attention that one of the background music tracks licensed from a record label for use in the game contains two expressions that can be found in the Qur’an. We have taken immediate action to rectify this and we sincerely [...]