If the initial update did not require a shut down but, something came up so they had to do so in a hurry, maybe but, I agree, how hard is it for them to send out a quick alert before doing so. Same thing for my area last summer, internet just shut down for 11hrs in my entire area, no explanations or warning given, they came back up and just said "they have upgraded". Bunch of BS, I mean, for us home users that is one thing but, it effected stores, emergency services and all, full blackout for 11 hrs, no warnings and just a quick "updated our systems" After the fact.