i'm up to 8.62GB, which is proabley about right then
Going through and doing individual wgets of each directory, then i will do a manual compare.....
interestingly i have slightly less than you for english_north_american (1.0GB) but more for english_international (365mb)
Got the same for MultiContry (1.2GB)
EDIT: Looks like i have a compeleat mirror now, will put it up somewhere tomorrow, then will do a manual compare