i'll confess that i don't understand this.
leaving your client running 24/7 is an invitation to a hack. you know -- port scanners?
and what's the difference if your pooled mining proceeds show up in your wallet more or less instantly? they're in the blockchain. that's all that matters...
i mine pooled. i open my client maybe once every two or three weeks. from the account of a separate user with an extremely restrictive firewall.
You sound beyond paranoid. Do you burn the machine with thermite after your client updates the wallet and you back it up and encrypt it?
You can't imagine how not worried I am about someone scanning my ports and hacking me. I am sure there are a hundred other ways for someone to hack me if they want to. If you think the measures you are taking would stop a determined hacker, you are probably sorely mistaken.
you completely misunderstand.
i'm not paranoid - i have tremendous faith in the blockchain. i don't have the need to see the Bitcoins in my client - i'm quite sure they're there.
as for my approach to security... i see no reason to run things i don't need, and no reason to have ports open that i don't use. to me, this is just common sense, gleaned from decades of internet/usenet/network usage.
one can run an open box, and shut off the things that appear to be dangerous - or one can close a box off completely, and open only those things which need to be used. < shrug > YMMV
