Comment 9 for bug 181731

I can confirm the same is true even within English variants. Speaking to one of the coreutils developers about it, he said:

"It's to do with your locale:

$ head -n1 /etc/issue
Ubuntu 9.10 \n \l

$ dpkg -s coreutils | grep Version
Version: 7.4-2ubuntu1

$for LANG in en_AU.utf8 en_IE.utf8; do df | head -n2; done
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda1 14421344 6657252 7031532 49% /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda1 14421344 6657252 7031532 49% /

Interestingly I can't reproduce it on fedora 11 (coreutils-7.2) or
fedora 12 (coreutils-7.6), or on en_AU on unbuntu.
Note coreutils doesn't provide english variant translations,
while ubuntu does, so I'm guessing it's an issue with the
en_AU ubuntu coreutils translation?"

This bug has also been present for something like two years.

$ for LANG in C en_AU en_AU.utf8 en_IE.utf8; do df | head -n2; done
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/md1 12389244 10877944 881960 93% /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/md1 12389244 10877944 881960 93% /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/md1 12389244 10877944 881960 93% /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/md1 12389244 10877944 881960 93% /