I tested Defraggler on my Windows XP SP3 "sandbox" machine to see how it worked. The progress percentage reached 72% and then never increased, although Defraggler continued to report it was defragging files. It appears to have reached a looping state, which it never exited. I paused then exited Defraggler. Then I rebooted. I ran Chkdsk to make sure the HD was OK. Then I used AusLogics Disk Defrag to continue defragging the drive. It worked successfully, and indicated that speed would increase by 14%. The computer seems much faster than 14%. Defraggler moved a bunch a files around and so between the two, the speed is improved. I'm going to wait until Piriform announces a new release which may fix this problem, and try again. BTW, I love CCleaner. It is the BEST!
