So, I have just realized that deleting apps and deleting them via the trashcan does not give me the space back. I've deleted a good 3-4gb of stuff and none of that has turned back into space available. I then tried deleting one app by securely emptying the trash and that space came back right away. Now, this is what my disk utility looks like and I can't remember if this is normal or not: I don't ever recall having my space not come back to me during SL. Does anyone know what's going on here?