Copy Problem: highlighting of destination disappears too soon

I use Windows 2000 Professional, SP
I copy or move files with the right mouse button. When I
drag the files to the destination directory then it's name
is highlighted. On my home computer it stays highlighted
until the copy is done, on my business computer the
highlighting goes back to the source directory as soon as
I release the mose button to get the copy or move submenu.
If the mouse moves while the button is released then the
files go to the wrong directory which can be quite a mess

How can I make the highlighting stay until the copy is
done (like the default on my home computer)