When I want to disconnect an external HD, I first eject it via right click-Eject, and wait a couple of minutes before unplugging. The HD icon disappears in a second or two after the Eject. When I unplug the HD, it's spun down and the light is not blinking. Yet I get that message a lot of the time. This happens with multiple HDs, which work fine after I OK the error message. Oh, and the disks have all been checked before ejecting by DiskWarrior and are fine. Any ideas?