Should the USB subsystem unmount a disk when disconnected?

[Welty, Richard]

Robin Laing writes:
>It is bad to remove a USB device without mounting and if you look at 
>teh device when you unmount it, many times you will see that it is 
>being accessed.  Yes, this even occurs in Windows.

indeed. after issuing unmount or eject requests, i always watch the
activity light on the device and wait for it to stop before removing
the device or the card. this is important regardless of OS, it matters
on Fedora, on OS X, on Windows ...

richard