The problem already exists on fc5.
When trying to burn iso on cdrw not empty, k3b ask to erase it, but k3b
cant umount the device.
One has to run from shell : gnome-umount -d /dev/hdX (where X is the
name of the dev).
--
Larry
"Computers are like air conditioners - They stop working properly when you open
Windows !" :-P