Yesterday I noticed a yellow caution symbol where my ESET security logo usually is, but when I clicked on it, nothing was wrong. I decided to do a Restart, and when my desktop was closing there was a screen labeled "Secret Window" shutting down. When I got to the User Profile screen there was an addition, unknown profile listed, labeled with a garble of letters. Of course after Restart everything was back to fine, but what the heck was happening to my computer??