After downloading the most recent firmware patch for the PlayStation Vita a number of gamers found that they could no longer access the store. It was assumed this was due to the firmware, but apparently not as Sony have fixed the problem without issuing a further patch.
The network issue that users experienced on their PS Vita was not due to system software 3.57 and is now resolved. Thank you for your patience.
That is all Sony told Kotaku, no explanation as to what was wrong. If you were encountering problems, try access the store on your Vita and let us know if it is working!