There is a phrase that always needs repeating. "Technology will fail you always. Back up, Back up, Back up." It was a sign we hung in our lab for reminding people not to rely on saving to one place. It also is good to know that your CD's will go bad eventually so check them periodically and change the information stored onto the newest format. It really is the pits when you realize something important is stored on something that you can no longer read or have a drive for (my particular fun is the LS-120 drives. They looked like a 3 1/2 inch floppy but stored like 100 megabytes more than the HD floppy but they looked the same. Too bad that one never really took off. The CD came out about the same time.) Guess who has stuff stored on floppies that can no longer be read by anything?