I bought Acronis TI after having trouble with Norton Ghost. It worked great, I backed up my boot drive (roughly 9 GB) to a 3.5 GB file very quickly. However, the next month (I do a monthly backup) the file was over 9 GB. I used the same settings (normal compression), Windows XP PRO, NTFS format, etc. Can anybody ofer an explanation why the file would be so much larger? Thanks!