When I try to empty the trash bin from the Trash Docklet in Plank (hit CTRL + Right Click on Plank to go the Plank Prefs and Docklets), it often crashes Plank (if not the whole desktop.)

And then, the Pref icon of Plank appears on the dock (blue anchor) and there's no way to get rid of it, but to close the session and come back.

A Plank problem or something in Pantheon ?