It all started when we sent out an email notification a few days ago, informing our users clearly and as simply as we dare, that our company's website and intranet would be down for half an hour, as some updates were being applied to the homepage. No other services would be affected.
Of course what the users read was: "We are turning every server off for the rest of the day, so that none of our computer services will be available. Once back on every problem you get will be related to this issue."