I've noticed that not a single threat that NIS has quarantined on my computer has the option to be deleted. Why is this? It appears that Norton has decided that since the threat is resolved, I would want to keep the file in question. This is absurd. How many people would be receiving a file they really want that just happens to be infected with malware? Hogwash. If I get malware, it was probably sent automatically from an infected machine; and I have no interest in the file. In fact, I don't want it creating an ever-growing quarantine folded just wasting space on my computer.
I can conceive of a way to destroy someone's computer simply by using NIS or NAV as the agent. Send the largest possible infected files your ISP will follow to the person's computer you wish to destroy. Keep sending them over and over again, preferably while the person is away. Each file will be cleaned and stored in the quarantine folder. Overnight you should be able pump a fair number of gigabytes into that poor soul's quarantine folder. And here's the kicker. He's stuck with them! So you can do it again the following night, launching your email from a different computer just in case he has the original sender on a black-list.
Below is a screen-clipping of the kind of actions Norton allows me for EVERYONE of the security risks it has quarantined.