Wondering if anyone has come across a problem like this and if there is a good explanation for why. I have a 2006 Toshiba laptop satellite with Windows XP Home, Firefox, and well a whole bunch of other Programs. I go to "My Computer" and right click the C: drive, go to properties and it shows 89 Gigs used and 21 GB's free. Double Click the C: drive from My Computer and it brings up the root directory (what's in my C: Drive). I click " Ctrl + A" to select all files as well as hidden ones and right click one of the highlighted folders, go to properties and it shows 79 Gigs total. What happened to 10 Gigs?