Skype down for two days - without explanation

 The internet telephony service Skype was offline for two days. The service, which has more than 220 million registered users, did not provide any further explanations as to how the outage occurred on Thursday until Monday. So far, it has only been stated that the reason was an "error in the algorithm of the Skype network software", as SDA writes. Skype had also emphasized that it had not been the victim of a hacker attack. This had been speculated after instructions circulated on the Internet on how to attack Skype. Skype's head of security Kurt Sauer told the New York Times on Friday that the disruption was caused by a unique chain of events "and the exact evolution is not yet fully understood".
Skype's software allows users to make free calls and send text messages to each other over the internet. In contrast to other similar providers, communication with Skype does not take place via a central server, but directly between users' computers using the so-called peer-to-peer principle. Founded in 2002 and based in Luxembourg, the company is owned by online auction giant eBay, which paid 2.6 billion dollars for it.