Skype outtage due to MS security patch reboot
 

Skype is blaming last week?s two-day outage on millions of Windows machines restarting after the installation of Microsoft?s security patches.

The massive number of reboots caused a flood of log-in requests (the Skype default is to login at reboot), causing ?a chain reaction that had a critical impact.?

http://blogs.zdnet.com/security/?p=460&tag=nl.e550