Hmm, what type of ebooks are these (epub, pdf, etc.), and how big is each ebook? I could understand manga ebooks taking tons of space, but the book types (thrillers and classics) that you mentioned shouldn't take up more than around 2MB each. That would be about 40MB at most for 20 ebooks I think, and you should have about 1.5GB of usable space (~1500MB). Did you maybe add music and pictures too? Because those types of files are more likely to take up a lot of space on your reader...
Last edited by maledyris; 03-01-2011 at 02:18 AM.