Hi guys. I am new to this forum so excuse me if this question has been raised before but i have looked through the forum and have found nothing that answers my question: Images of my c: partition ar usually above 4.5 GB in size, recently however i noticed that the image size has dropped to 3.9GB. I don't know exactly when the size reduction happened, but the only change i have made to the c-partition recently is that i have installed pefectdisk 7 and defragmented the partition. Could the defragmentation have caused the image-size to become smaller?? I use Acronis True Image 8 (build 771). No compression. The images are full-backups (i.e. NOT incremental). I have checked the images and they are ok.