And don’t forget Mac OS X was on two-year release cycles at that time. They spent two full years on bug fixes only, no features!

Here’s my theory. It’s not that your Windows desktop was listed 4 times. Those are 4 different devices. One of them is the real Windows desktop. The others are some other devices (could be the attacker’s, or your automation devices) that are using the same authentication token copied from your Windows machine. That’s why they are all recognized as your Windows desktop.