Quite true. My SMUG estimate, :), ignored the 4GB file size limit (partially because I was hoping for files > 4GB some day!) BTW, after another 24 hours, my file is up to 183,350 extents, and taking about 1.3 seconds per new extent. -- Stan Sieler [log in to unmask] http://www.allegro.com/sieler.html YES, but what is going to happen when you close the file?? Nick [log in to unmask]