Yes in fact those are books downloaded with my Kobo directly. Two of those books were on my Kobo when I purchased it, the last one was one free I downloaded through the Kobo website with the "add to my library" stuff.
So I should not use the kobo desktop software?
Edit: and once I have the adobe drm file, both in ADE, and in calibre, I cannot manage this file with Calibre? I have to send the file to my KOBO with Adobe Digital Edition?
Edit2: for the edit above this was because I had my iPhone connected as well so Calibre did not recon my Kobo