kabamarutr on 21 January 2014
Although the error is not new, more and more PS4 users are complaining about its appearance which renders save files corrupt and some games unplayable. Sony investigates. Follow the link for more.
http://www.computerandvideogames.com/446116/ps4-users-report-save-corruption-errors/
[UPDATE]
A hardware issue it is. Thankfully a solution has been found.
http://www.gamrreview.com/news/90937/sony-offer-fix-for-game-breaking-bug/
This, I stole from grandpa...It's called soap.
