If you try to login to Skype today you might have experience some problems login in. It is due to problem with Skype server. It happened because of crashing of servers linked by peer-to-peer technology. Millions of VOIP users were affected in worst outage since 2007.
No one could make calls via Skype as a network connection failure error showed up. Skype's official blogger, Peter Parkes, apologized on behalf of the company on the Skype blog.
According to the Skype blog ....
"Skype isn’t a network like a conventional phone or IM network – instead, it relies on millions of individual connections between computers and phones to keep things up and running. Some of these computers are what we call ‘supernodes’ – they act a bit like phone directories for Skype. If you want to talk to someone, and your Skype app can’t find them immediately (for example, because they’re connecting from a different location or from a different device) your computer or phone will first try to find a supernode to figure out how to reach them."