is there a version problem between Sarge Disk

[belahcene <belahcene@iap-cu.dz>]

Hi,
I download last some CD's from /pub/cd-images/debian-weekly/i386/ Now, I 
want to continue the downloading, but the content is not the same , i 
've noticed from the size for example for the new sarge1.iso is 671 150 
080 while the last one ( I ve downloaded ) is 671 012 864.
The question is : the installation can run correctly if some CD's are 
from the previous week and other from the current one??? Is there a 
possible incompabilite ??
If this is rhe case where can I find the previous week-release ( is 
there a store for downolading )

thank you
bela