Popular VoIP service Skype suffered a massive outage yesterday, disrupting service for millions of users in the US, Europe and Japan.
In a blog post, the company explained that the outage was caused when a number of 'supernodes' failed to connect with computers, due to a fault in some versions of Skype software.
Skype said that it was creating new 'mega-supernodes' to solve the problem and affected users should be able to start using Skype within the next few hours.
Tony Bates, the company's chief executive officer told BBC News: “Right now it looks like clients are coming on and offline and sometimes they are crashing in the middle of calls. We are deep in the middle of investigating the cause of the problem and have teams working hard to remedy the situation.”