Part 1 covered the size of the disk from 1.0 to 1.1.2. In 1.1.3, things have changed.
# df -h
Filesystem Size Used Avail Capacity Mounted on
/dev/disk0s1 267M 264M 0B 100% /
devfs 18K 18K 0B 100% /dev
/dev/disk0s2 7.3G 6.1G 1.2G 84% /private/var
That’s right, somehow I lost 33M of space on /.