Several high-profile websites and services suffered over the weekend thanks to the leap second and huge storms.

An extra second added to the world clock saw the likes of Reddit and Foursquare fall over.

Hours earlier, a lightning storm on the American east coast left millions without power, and disrupted a major cloud storage data centre.

Netflix and Instagram were among the services affected.

Amazon Web Services (AWS) - the company's cloud computing servers - was in part taken out by the storm, as was its back-up generator.