Leap second bug: Reddit, Mozilla, and more experience technical issues

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More than a decade after the Y2K scare, a single extra second has caused problems for a number of notable web companies. The leap second — a one-second adjustment added to atomic clocks to synchronize it with clocks based on the Earth's rotation — occurred on Saturday night and caught a number of companies unaware. Reddit tweeted that it was having Java/Cassandra issues due to the extra second, while Mozilla filed a bug report also due to leap second-related Java issues.

http://www.theverge.com/2012/7/1/3130079/leap-second-bug-reddit-mozilla-gawker