I read about the Skype outage just today and all 5 installations I own were the problematic version because I wanted the 3+ video conference which I imagine was very popular over the holiday season especially for families living around the world. I have now updated them all of course but the outage was the mistake of Skype and their misdirection to point at users was clearly silly, saying ok sorry we dropped the ball would have been more accurate as having such a serious problem while pretending it was the users failing to upgrade that caused it just compounded that mistake.
A single article on Slashdot stating sorry we at Skype messed up, please install a patch to repair our garbage or our whole network will collapse would do it. To be fair a small percentage would start researching how to crash said network on purpose, but that cat is now out of the bag anyway now.