Made out of people

Irritating Vertical Lines

My computer is acting oddly these days. Regularly, bits of the screen overlay themselves with these little vertical lines.
At the moment, as I write this entry, the top-left quarter of my screen shows them (except in parts that have recently refreshed--causing it to redraw always fixes the problem); so has the entire taskbar across the bottom. Ever seen this before?

It oddly recurs--this bit cleans up, then something sets it off on another screen, and it becomes visible again...