Defrag killed the computer (old version)

hey, i've used Defraggler for a few weeks, but of some reason after i defragged my laptop, it made it very very slow.

i thought this was just my fault, so i tried hard to recover my files, but many of those was broken of some reason, so i had to make a new install of windows and say goodbye to my old stuff (thankfully this wasn't my main computer)

well, i reinstalled windows here last night, and after i've updated to SP3, installed anti-virus and a game, i ran Defraggler, when i then tried to start my computer this morning, it freezes when it comes to the windows desktop...

it shows that i use version 1.02.078 (BETA), i'll try to update for then to defrag in safemode, hopefully this will fix my problem, else i'll have to reinstall once again...

i just installed the latest version, and ran "check drive for errors", it failed to complete, and asked to run Diskcontrol (i think that's the english name), d'oh me, i forgot about that, so i rebooted the computer, and it run the scan before entering windows, and it began a mile long repair, surely, something was wrong here, i've now rebooted windows after it completed, but it doesn't seem like it have helped, it still freezes...