Hi,
This is propoably because the usb drive is mounted with root permission, and you are logged as a simple user, so you can unmount the device.
To change that :
- search in which name your usb device is mounted. To do that type "mount" in a prompt.
- in general cases, the name of the usb drive is /dev/sda1
- open the /etc/fstab file (with the root permission), and verifiy there are no line for your device (noline start with /dev/sda1 or the name of your device). If yes, enter these data on a new line :
/dev/sda1 /media/cle-usb auto rw,noauto,user 0 2.
- with root permission, you can umount your device (umount /dev/sda1).
- in Konqueror, click or double click on your usb device : the device is mounted. By right clicking on "Safely Remove" on Konqueror, you can now unplug your device.
Regards