i have a HDD of 320 GB and a couple of days back due to some unexplained reason it just keeps decreasing..i even deleted 40 gigs of memory and even decreased shadowspace allocation still the memory never increased to more than 12 GB even if it did the space is eaten up almost immediately..it once reduced from 60 gigs to 20 gigs in just a day..and i dint even download anything...plz help me fellas..i need it bad :S