I have been downloading books like mad from the barnes and noble nook book section (mostly Free). after almost 300 novels my nook still reads %100 free space.or 239/240mb unused. Calibre sees nothing in the device and windows sais same. Am i to assume that i can download infinate number of books from my nook account at B&N and never run out of space? I have a mem card installed with one book on it and calibre and windows recognizes that book...but nothing of the 300 i have from barnes and noble ? The one on the mem card is the only book i obtained from a 3rd party site.