Sleep modes in OS X, as with other operating systems, allow you to quickly lock your Mac, and use less energy when not in use while being ready to resume operation almost instantly. However, unlike a full shutdown, this readiness to resume means that one of a number of events might result in your Mac being woken from sleep. These can be purposeful interactions, but at other times the system might wake for unknown reasons, which can be a bit of a problem. Continue reading →