After some recent progress on a major annoyance I've been having on my computer, I decided to once again try my luck with this little one, this time, armed with a screen shot (I learned how to do this from the Dilbert TV Show... who says it's a waste of time?)
Usually after running a DOS program, but occasionally just for the fun of it, my computer pops this gray rectangle on the screen. Note the title-less button on the task bar. This appears in the task manager too. No way to close it or hide it. Programs run on top of it, but I've had to move all icons to the top of my desktop to be able to function with it (as you can see...).
Anyway to that we know of to prevent or cure this?