The icons on my desktop, without any warning or previous problems, started moving on their own. They stack up ontop of each other or move to other positions on the desktop when the cursor gets near them. (Just trying to "capture one" to click on it is hard.) I have not installed any new software or hardware. I closed all running programs via Close Program routine except explorer & systray and unchecked auto arrange. Sorted by name that seemed to clear it up for about 5 minutes then it started again. Help please