I have been sending my self books from Calibre to my paperwhite using my paperwhite email address. Works perfectly. However, when I delete the actual book from the device, it still appears on the "All" tab in my Home tab, even though it is deleted.
I now have about 8 pages of books in my "All" tab of the paperwhite, none of which are actually downloaded.
Very annoying though harmless. Can you scrub or delete this list?