I've got a question maybe someone here can answer. Why is it the entire Program File "Playonline" folder takes up around 10GB and then windows add/remove programs list shows FFXI and each of its expansions taking up 7.8GB?

If that were true then all of it should take up about 31GB but it doesn't. So what's this 7.8GB figure, is windows making it up? Or is that some kind of pretend maximum the install tells it it may potentially use up? Is it related to this 8GB partition figure in relation to the PS2?