After its site went down for a second time in five days and the third time in 11 days Facebook has shared a 4% drop.
According to the website performance tracker, currentlydown.com, Facebook was down for 42 minutes around midday in California after being out of service for 12 minutes four days earlier.
A post on Facebook's developers site said: "A Facebook-wide issue is causing the Facebook Graph application programming interface (API) to be temporarily unavailable. We're working with our core infrastructure teams to identify the issue and will update you when we have more information."
Spokesman for Facebook, Jay Nancarrow, said: "We are currently resolving Facebook services people had trouble accessing earlier today due to a configuration issue."
The social network did not state however how many of its more than one billion users worldwide were affected and did not provide any other details.
David Jones, digital performance expert at application performance management software firm Dynatrace, said: "The latest Facebook outage, even though it was brief, shows just how critical digital performance management is to today's businesses.
"In a world where seconds of delay can translate into millions of dollars in lost revenue and impact both reputation and loyalty, an outage of this breadth can wreak havoc - and that's just what we've seen from the immediate reaction on social media."
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