Unmount usb stick

[Cesare Leonardi <celeonar@tiscali.it>]

Hi all.

Since some days i've noted (updated Debian Sid) that when i right-click 
on a usb stick icon and select "Unmount volume", the icon disappear 
immediately but the unmount progress window doesn't appear and the 
device is still mounted for some seconds.
So the problem exposed in bug #367836 is reappeared and to be sure to 
not corrupt anything i poll the device in a terminal window using mount 
to wait it to disappear.

Is the window that shows the unmounting progress lost somewhere?
Or, to be sure that i haven't purged something by mistake, what is the 
package name that it belongs to?

Regards.

Cesare.