I've recently noticed two new folders "magically" appear "out of nowhere" within my main personal folder ... you know, the one which contains all those other folders, such as -- music, pictures, downloads, favorites, links, etc -- and I'm very curious about their origins!

First, one file appeared that says "ntusr DAT file" ... followed a couple days later by something else labelled as "ntusr.dat.rmbak RAMBK file" ... which is a totally mysterious occurrence, at least in my own small range of experience. Furthermore, I can't even open these things for a look {or delete them, for that matter} ... as I get some sort of message saying something like "This file cannot be deleted, because it is being used by an active application" ... or whatever.

Has my PC been commandeered by crazed Russian hackers, or what?? I'm may end up losing sleep over this one!