Now THAT takes the biscuit by a long distance:

Those are the two hard disks of my RAID mirror! Showing up in Safely Remove Hardware... hard disks, which of course are nowhere to be seen in the device manager:

Anybody have an idea on how to exclude certain devices from Safely Remove Hardware? Let me know, I'd be really glad to hear.
Update A friend of mine pointed out that he had seen this with a RAID controller on one of his boxes too. He suggested that stopping the device would not work. After some hesitation, I decided to give it a try - and it failed:

Thank goodness. If it had succeeded, I would have had a problem.