Ive had this problem for a while now... I have a Dell Inspiron 1100 and it has apparently 106 gigs of space and right now I only have 47 gigs of free space and I know Im not using up more than half the laptops total space. Ive maybe got 10-25 gigs of space that I know Im using up of videos, music, pics and Call of Duty 4.... I used to burn DVDs a lot a while ago using Nero and I thought I had checked everywhere possible to see if that program left any remnants of my burned dvds on my computer... I was also told it could be a virus that just keeps copying itself and can take up a good section of your space on your drive... does anyone have any suggestions on how to go about trying to figure out how or where to find out where all this space is being taken up?