Defraggler does not finish. I an running Windows XP SP-3 with all updates. Defraggler Ver 1.18.185 runs till about 92% then crashes and my computer reboots. This happens every time. I have x86 family 6 mod 6 Stepping 2 Authentin AMD 1599 MHZ with Award BIOS ver 6 PG and 2 Gig of sys men. 300 Gig HD with 152 Gig free.