Skype has blamed its system-wide outage on Microsoft Patch Tuesday - all those computers being auto-patched and then restarted and then logging back into Skype consumed all the system’s resources.

There are so many Blindside issues there we can do them for you wholesale:

- single time of patching for billions of machines (Microsoft)

- software integrity issues (Skype)

- limits of self-healing ability of P2P when too many nodes out (supernodes, perhaps?)

- the road to service outage is paved with everyone’s best intentions

- increasing perception that patching can be dangerous, deterring users from doing it…

wg