In msconfig, I found "stopdefragment.exe" being run at startup. It's by an "unknown" manufacturer. I googled the file name and couldn't determine where it comes from.
Did you search where on your disk the file is? should give an idea where it comes from?
If it is used by MyDefrag, then great! But does anyone know?
It's not part of MyDefrag.
Does anyone know, Does the windows defragger work against Mydefrag? (If I'd left it running). Or are the two programs non-conflicting?
They use conflicting file placement strategy's so the builtin defragger should be disabled if using MyDefrag.