"Imagine if I was a novice user..."
Wow, that is the funniest thing I have read in months. You sir, ARE a novice user. Hell, even most NOVICE users I know don't delete something that they have no idea of what it is... I will say, you have balls of steel. If I had done something stupid like this, the LAST thing I would do is publicize it. Although, in doing so, you get people like me, that have never been to your site, yet will register JUST to tell you how dumb this was.
So, for future reference, if you don't know what it is, don't F^$K with it!
The attitude of making this Apple's fault just blows me away... It wasn't named in a way that you could understand? You're f$^%ing kidding me, right? Yes, the Mac is marketed as easy, but that doesn't mean that they should have to make everything vital to the system completely invisible to you. It is a fair assumption that most people won't mess with something that they have no clue about.
Christ, I have never seen such an idiot behind a monitor. You really have no business using a computer, not only because of your mistake, but because of your transferrence of blame onto the system. Let's put the blame where it really belongs... in YOUR hands. Idiot...
Oh, one more thing... Any program (your NO-IP client) that messes with the permissions/name of the USR directory is meddling in your system too much. Find a better client, or change to DynDNS or similar. Giving some poorly written app control is just asking for trouble, especially when you are a novice that can't fix your own problems.
And They Said the Mac Was Intuitive