Analysts blame Skype for massive VOIP outage
eWeek | at | by Mike
This much we know: Skype's two-day outage was triggered after its peer-to-peer network became disrupted following a massive restart of its users' computers as they rebooted after receiving a routine set of patches through Windows Update.
The blitzkrieg of restarts caused a flood of log-in requests, which led to a global bog down in service. In the course of the outage, Skype engineers discovered a software bug within the network resource allocation algorithm that prevented the service from righting itself.