> if any one has cleaner solution, i.e., a solution that never kill innocent > process, > I want to see it.
I have an almost mathematical certainty that the human factor is by far the greatest contributor to the problem and solving any technical issue would be insignificant by comparison. Like any other form of security, the trade offs are what count. Bloating Plan 9 with feeble attempts to shelter the system against malicious users is, in my opinion, too expensive. Lucio.