floppy behaviour

[squareyes]

Hi all,
am  able to mount floppy as user from terminal
mount  /media/floppy , and umount  OK,
but if I do the same from  Computer>Disks -  Floppy,
it will mount and open contents OK, but will not
unmount after I have closed the floppy folder. Says floppy is busy.
Tried from terminal as user and as root to umount, same result  floppy 
is busy.
Looked at man umount, have tried the -f option with umount, same  floppy 
is busy.
Any ideas as to what I am doing wrong, am using Warty.
Thanks in advance,
Take Care
Winton