Just a quick heads up to let you know that the PlayStation Network will be undergoing maintenance tomorrow, Tuesday the 25th of August. As a result you will be unable to sign in to the PSN between 4:15pm and 9:05pm UK time. We’re sorry for the inconvenience – the maintenance is global, so the timing is not something we have control of.
If you’re already signed in before the maintenance begins, however, you should be able to stay connected to the PSN servers. It is likely that you’ll be disconnected and required to sign back in once the PSN comes back up at 9:05pm, though.