I run a Seagate Replica 250gb on an XP machine. The automated backup runs quietly in the background and does a full system backup as expected. The product is supposed to be Never Full in that as disk space is used, the older files are overwritten. However, todays backup has failed as due to lack of space on the external drive. How do I free up space? Why is this so called Never Full device full? Any help grately appreciated. PS - I have posted a question with Seagate Tech Support without response to date.