So, at the end of the day, Skype explained the reason for the outage that broke its P2P network. To make a long story short, the point is that Skype relies upon a closed source approach (that slows the bug finding process) and on Microsoft technologies that, in that specific case, create the problem. This reinforces my early assumption, that crash cause was Skype design instead of a unpredictable problem. It simply unacceptable that an outage of that dimension has been provoked by the inability of an operating system to patches itself without always rebooting. And who did that choice should account for it.
Right, Skype is very clear in repeating that Microsoft has nothing to do with the Big Crash. Nevertheless, it raises some suspect, to me, reading statement such as: “The Microsoft Update patches were merely a catalyst — a trigger — for a series of events that led to the disruption of Skype, not the root cause of it.” or “Microsoft has been very helpful and supportive throughout.” or, again, “In short – there was nothing different about this set of Microsoft patches.”, “The Microsoft team was fantastic to work with”. But this PR stuff doesn’t change the basic stuff: Skype is the next component of a “vulnerable society”, where problems, risks and damages are created mainly by the ICT companies – instead of the “dangerous criminals” that fall under than unspecified label of “hackers”.