I did a search for files deleting, deleting files & files delete & don't get real hits but just a listing of every thread in the forums. The problem is that I've deleted files & folders from both the "internal storage" SD & the external SD using goth the "files" app & "total commander"; the locations look empty after the "delete". Now, using a usb cable to connect to my computer to transfer some files/ebooks to the A700 locations, I still see the folders & files! So is this a "known problem" with 4.x or haven't been encountered by anyone or that no one used a usb connection to a computer to check on the "download" directory of the internal storage? Is the problem only with the Acer A700 or is it a generic Android bug? I'm going to add some more ebooks to the A700 today, disconnect the usb & after importing them to aldiko, will "delete" then check with an usb connection to see if they are available on the computer for reading even if they are supposed to be deleted. Anyone have ideas on what is happening?