Hi, I have the 11" Air with 128gig drive and 4 gigs RAM. It took me awhile to migrate my system across from my late 2007 white macbook, I was trying to do it using a CCC clone on a USB drive and it kept hanging. I was finally able to migrate successfully by making and using a Time Machine backup. But in the process of all this I wound up erasing the Air's drive at least 4-5 times, and when about to use Setup Assistant this final time I noticed that it said I had 101gigs (or something like that) available. I had reinstalled the system without languages, so I was expecting to have a bit more space than that, even with the extra space taken up from formatting the drive. Since the data that's been erased isn't actually erased but just isn't visible anymore (choosing the basic erase in Disk Utility), is it possilble this is taking up space and if so is there a way to clear that space? Does this mean I need to use the 'erase free space' option, which I hadn't done? If I can gain some gigs back I don't mind going thru the whole erase, install and migrate procedure again. Thanks in advance.