I've noticed that when I "Secure Empty Trash" though it takes longer, I usually regain a lot of gigabytes back. Currently, as of this post i'm "secure emptying trash" and i've regained about 25GB's which sounds about right considering there was about that much worth of video recordings from my video camera I no longer needed. In the past when I've just "deleted trash" i've seen different results. If I have say 10GB's in the trash and I just "empty trash" then i'll maybe gain back like a GB or 2. ...if anything. So, my concern is...say currently with the 25GB amount of trash I have, If I decided to just "empty trash", I obviously would not have gained back all the 25GB's..., perhaps just a few, guessing something like 5GB. Well, does that mean that those GB's that are emptied in the trash (not securely) are just lost forever? ..Or will I regain those GB's the next time around (say weeks later) I securely empty the trash with whatever happens to be in there (all new stuff in the trash)? Am I making sense? Kinda confusing to me cause I don't understand it. But I feel it's vital for me to get this and have the most amount of gigs available on my Mac now that i'm using about 30GB's per week filming stuff and editing it on iMovie.