I built a machine about a year ago:

MOBO: MSI mobo
CPU: Conroe Core 2 Duo 2.66GhZ
RAM: 2GB gskill RAM
VIDEO: Nvidia 8600
HDD: Maxtor SATA (master) WD(slave).
SOUND: 5.1 Creative Labs

Every once in a while, the system freezes and I see the CPU useage go up as high as 70%. Whats going on with my machine??

Thanks