Known as a "leap second," which is a basic one-second adjustment applied to the Coordinated Universal Time (UTC) to keep it up-to-date with solar time, the additional second added didn't sit well with various web servers.

For example, said it was having Java and Cassandra issues and Gawker's entire site network was down for about 45 minutes. Other sites such as Yelp and Stumbleupon also reported technical trouble.

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