Hey! I just tried this because I have a similar problem, although I think mine is much worse. It´s been going on for about a week and I´m desperate. I´ve erased everything on my computer and backed it up on my hard drive, nevertheless, there is still the legendary: AVALIABLE: ZERO KB legend on my disk information. I´ve gone mad trying to figure out what the hell it is that is taking up all my little 60Gbs... I´ve even resorted to drastic measures and erased programs such as Skype, Firefox and all the widgets on my dashboard. There is still not one kb of space left to even save a Pages document. I´ve deleted all my music, all my movies, series and videos, cleared all the cookies on Safari, emptied the trash a bunch of times and nothing! Just now I managed to make some space (50 mbs) so that the disk utility would be able to create a temporary file (it requires it), the app ran and NOTHING! it gave me only 12 mbs.
Please somebody help! I have no money to send my MacBook to service, nor do I have it to buy a new internal drive... and much less changing it. Could somebody please just tell me what to do?
Thanks!!