Version:           unspecified (using KDE 4.6.2) 
OS:                Linux

I am using the program quick-usb-formatter which adds an entry in the device manager in the systray. (http://opendesktop.org/content/show.php?content=137493)
Before formatting the device, the program calls the method teardown() to unmount the device to format. However, this action sometimes fully ejects the device which disappear from /dev/sd*. The program is then unable to format it. The device also disappear from the device manager. I have to unplug and replug it to have it back.

Using 'udisks --unmount /dev/sdb1' works fine though, because /dev/sdb1 doesnt disappear. I would expect the same action from the method teardown(). I cant figure out why it happens only on some devices since I dont know much about c++ and even less about kde/solid libs. I would be happy to help to tackle this, if anyone have any clue about what is wrong.

Reproducible: Sometimes

Steps to Reproduce:
Insert a usb key/hd, mount it in the device manager (in the systray).
Unmount it from the systray.


Actual Results:  
In some cases the device disappears from the device manager, and the corresponding entry in /dev as well. 

Expected Results:  
In other cases the device is only unmounted and still appears in the device manager, and can be mounted again when clicking on the mount icon. The entry in /dev is not removed.

Using kde 4.6.3 on Kubuntu natty with kubuntu updates ppa.