Thank you for a quick reply.
You are right it seems to be wrong above 2GB and not 1 as i said (sorry about that)
Just to be sure i made a zip of 1,11 GB (1 200 367 282 bytes) and when i looked at it in the browser its reporting as 1,12GB.
is there any way i can fix this ? i tried searching the forum but i didnt manage to find a solution.