Popular VoIP app Skype has suffered its second widespread crash since it was officially purchased by Microsoft last month.
The outage swept through the network at about 11:30 BST, causing the app to consistently crash on Windows as well as Mac OS X and the wide range of smartphone applications. At the time of writing, the service is still down.
The ill-timed crash will have Skype engineers rushing to find the second fix in as many weeks, after a small software update appeared to have solved a very similar problem.
Microsoft must now be wondering whether the $8.5 billion it shelled out in cold hard cash, was perhaps a buck or two too much. And, with Apple announcing its rival iMessage service for iOS 5 yesterday, this outage leaves Skype looking exposed.
Skype posted a message to followers on its Twitter account just over an hour ago, admitting that users were having problems signing in.
The post read: "A small number of you may have problems signing in to Skype. We’re investigating the cause, and hope to have more details to share soon."
UPDATE: Skype says it has identified a "configuration problem" and that affected users should see an improvement in the next hour or so.