Originally posted by shakespeare
Haha! That's hilarious! When I lived at home, I had exactly the problem you had. It was incredibly annoying and I couldn't solve it. I tried two things:
1. I launched Stickies whenever I wasn't using the computer, and created a big yellow sticky in the centre of the screen instructing people not to close any running applications or turn the computer off; and when that didn't work,
2. I bought my dad an iBook and told him never to touch my PowerBook.
Again, surely not the elegant (or free) solutions you were looking for, but sadly, I can't think of another way to do this. With Panther, hopefully, we'll have multiple graphic logins, so you'll be able to log out and keep Folding running, while you'll be able to let your dad log in on one of those less-privileged accounts.
Actually, I just had another idea. If the only thing you want your computer to be doing while you're away is to fold, you could run Folding from mc68k's SP script, which (I think, correct me someone if I'm wrong) will run (if you say yes to 'start at boot' while it's installing) regardless of what user is logged in. That way, you'd be able to create an unprivileged account for your dad (do this by creating the account, and then choosing 'Capabilities' in the accounts pane), fold whenever your computer is on, and you'd be able to be sure he wouldn't mess with your files.
Sorry to have made such a long post. Normally I'm more concise. Sorry, too, if I've said anything obvious. I haven't slept in a while and my self-filtering mechanism doesn't work when I'm tired.