As I keep saying, I did not COPY the files, I MOVED them. They are only in
ONE location.
HKCU\Software\Microsoft\Windows\CurrentVersion\Exp lorer\Shell Folders is
full of paths with MY username except for the startup. As it happens this
keeps changing back every time I run this program Galen suggested.
The key HKLM\Software\Microsoft\Windows\CurrentVersion\Exp lorer\Shell
Folders is the one with the All Users paths.
Now it may be that I haven't researched this enough, but it is also clear
that no-one is actually reading all of the problem. The startup items are in
one location, not two, this location is being read twice and shouldn't be.
The other location that should be read after it, is not. I know it's supposed
to split them into current and common, and the problem is it thinks both
those locations are the same folder and is reading it twice. Clear enough now?