[Flash 8] Dynamically loading pngs using XML but, why is it taking so long?

Dear all,

I’m dynamically loading pngs into an attached movieclip. It works fine testing it locally but when its up on a server, it takes quite a while to load each picture, even though they are only between 10-20kbs each.

Why is this? and how can I make sure they all ‘show up’ first before starting the clip. (rather than they pop up one at a time).