I too have used Defraggler for a long time and have recommended it often in my blogs.
I have been trying to reduce the amount of junk on my PC recently. I play a lot of games as well as use specialized software for machine embroidery.
My Defrag takes 3 or more hours whether I use Defraggler or Windows Defrag. However, if I do an analysis after the defraggler use, I may get 25+ or - from the original analysis. Additionally, I get different numbers, in large quantities, as to how much of the drive is full.
My machine is slow. I have an HP Laptop, Vista Home Premium, 32bit with 4gig of RAM. I recently added the 4th gig and it did not make any difference in the speed.
This is the only snapshot I have right now.
Thank you all in advance, I am so frustrated . I don't want to buy a new PC! The slowness is killing me because I do run a business out of my home. Pat