Came home from a weekend in the mountains with my family to discover that the UPS serving the stack of networking gear and the main servers had shut itself down, apparently during a big thunderstorm last Thursday evening.

Fortunately, pushing the "on" button on the UPS was enough to bring everything back to life with no apparent loss of data. But I can't help wondering if there isn't something wrong with the UPS, since it should have powered itself back up even if the batteries got run all the way down... nothing useful in the error logs.