Repeat Downloading

okay not sure where to put this so i'll just throw it out

I downloaded the Empire at War demo when it came out

Then bought the game afterwards and deleted the demo

but everyonce in a while when i check my computer i have 1,2,3, or 8 yes 8 copies of the demo downloaded to my computer. So i delete them. and forget about it

but it keeps happening

and its getting a little annoying

just wonder if theirs anything that can be done