With the abandonment of the auction house, and the upcoming Reaper of Souls expansion, I've decided to reinstall Diablo 3.
I don't have the fastest of Internet connections, and it has a monthly quota, so I dug out the original DVD to install from that. Before installing, it downloads some updates, then launches Battle.net client, and then decides it's just going to download an entire 18gig. It doesn't appear to have copied anything from the DVD. Can I not save some download by getting it to at least install some files from the DVD?