I've had a friend ask me this question, then I tried it on my computer and a couple others and they all do the same thing. I'd like to see if any of you know what's going on. I've tried it on my computer running Windows Vista Business 64 and I get the same type of problem. Drive properties says I am using 161 Gigs, and Folders Properties (I open my C-Drive, and do a Ctrl-A to select all files and folders) shows I'm using only 106 Gigs. What is happening to the rest? Why the inconsistency? Please note, I have "show hidden files and folders" turned on, and I have "Hide protected operating system files" turned off (Shown). My HD in my laptop is a 250G drive. I'm baffled.