Agust, do you always use it from within a file manager such as Thunar?
In KDE, Gnome, etc., you can drag a file on the desktop over to the Trash and drop it there. Not so in E17?
The above web page says
...what to say... it’s just a trash, you can drag files from your favorite file manager into the trash and you can empy the trash with a right click.
maybe the E17 trash is only usable from within a file manager.
Can someone confirm this?