I just DL this program also and am having the same speed issues
my system specs are
MOBO EVGA 780i SLI
CPU Intel X6800 3.42 MHz
COOLING Zalman 9700
8gb Corsair Dominator @ 1067 2.1v
VIDEO XFX 8800 GTX
PS OCZ 700w
OS Windows 7 Ultimate X64 / XP Pro x32
HD's 3 X 320gb Barrcuda's Raid 5
WD 300gb VelociRaptor
Display's 2 21" Sony Trinitrons
I will try disabling system restore and see what that does
will let you know