Question regarding My Pictures Slideshow Dynamic updating

Hi,

I've got a question regarding the my pictures slideshow, if the screensaver
is active, and i connect to the my pictures folder share from another
computer, then upload more pictures to it, they don't appear in the
screensaver.

You have to stop the screensaver and let it start up again before the new
pictures are appearing in the slideshow. Any ideas or settings where this can
be changed to dynamic updating ?

Cheers

Steven