I have always been plugged directly into the back of my HP without any hub or docking station and it happens.
I saw on different forums that it happens only on USB dongles connected thru third-party hardware like a USB hub or docking station.
Now I am testing it while connected dongle directly to the laptop USB.
Will take a couple of days to make sure that it does not happen anymore.
I wish Microsoft would own up to this one and take some efforts to fix this WITHOUT paying for support. I paid for the keyboard (ergo the drivers) and deserve a working product. This isn't like a broken hardware issue.