OT: mount/umount doesn't track used resources correctly?

[Miles Lane]

I am having trouble removing the usbide module
which enables me to access my USB external 
hard drive.  I think the problem may be due
to usermode tools not handling the new "mount
multiple devices to a single mount point" feature,
but I'm not sure.

Here was my mount configuration for /dev/pda 
devices (the partitions on my USB BusLink drive)
before I unmounted all these partitions:

/dev/pda8              2016016        20   1913584   0% /mnt/pda8
/dev/pda8              2016016        20   1913584   0% /mnt/pda9
/dev/pda9              2016016        20   1913584   0% /mnt/pda9

Currently, mount shows:

/dev/hda7 on / type ext2 (rw)
none on /proc type proc (rw)
none on /dev/pts type devpts (rw,mode=0620)
/dev/hda8 on /home type ext2 (rw)
/dev/hda1 on /mnt/Win98 type vfat (rw,nosuid,nodev,umask=0)
none on /proc/bus/usb type usbdevfs (rw)

Any ideas?

        Miles