There is discrepancy of more than 16 GB between the size of all files on my hard drive (TOSHIBA A135-4427 laptop with Vista Home Premium) , which I get when I select all files and right click to properties, vs. the size reported by C: properties. All files show 62 GB, while C: used space shows 78.7 GB. Does anyone have any idea where are "missing" 16+ GB. If it was 1 GB or so, it would be OK, but 16+GB seems like offly lot.