The default mode of the Desktop is to auto-arrange icons. If you move an icon, delete one, or add a new one, it will rearrange itself. The problem happens when you connect another monitor with a ...

If our Win98SE systems crash, after reboot, bloody "Auto arrange" is switched on at the desktop, so all our painstakingly arranged icons end up jumbled at the LHS.

As files are added to the desktop after downloading, Windows 7 seems to want to add the recent files starting at the top left. And occasionally some files get arranged from left to right instead ...