Oh, really? I figured the decreased total overall was due to the operating system. It says there is 12.8 gigs of possible space, of which I have used 6.7 gigs. Does the operating system take more space than the 3.2 gigs of "hidden space" that is not listed in the total? Out of the 12.8 gigs possible, it says I have used 6.7 gigs, only 4.7 of which can be accounted for by adding up the individual categories.