I have done several backups without difficulty. All of a sudden, it was giving me disk full messages. I erased everything from my new disk and it still showed that it was full. I don't know what acronis did to it... but I formated it and it showed empty. Now I am trying to backup again. The icon is gone from the system tray for some reason. It is making lots of noise but it shows 0 percent for over 20 minutes now. What gives??!? addendum. It is still churning. The windows explorer says I have used several gigabytes... but it still says 0%!!!