hey, when my mac mini came, about 25GB of space had been used up. i didn't question this as of course the machine came with installed applications and data etc. i've had my mac mini for a while now and obviously i've used up much of the hard drive, but i checked how much i had used up and i made it 58GB. The total space is 74GB and i've got 3GB left. So where has the other 12 GB been used up? Is it something to do with the OS? Help appreciated. Apologies if this is a basic question. Croc.