Harddisk Park in Hardy Heron

After playing around with hardy for about 2 weeks (updates here, updates there), I heard the harddisk sound ticking in every few seconds. Even I'm idle with hardy, it's still ticking. I didn't know if there was some program runs in the background or not, but it's a little buggy for me.

Searching to the uncle google about that problem, I got to this page to handle the harddisk park in ubuntu hardy heron. In the part that said `How to get disks idleing correctly (without excessive load cycling)` (which is at the bottom of the page), I followed the steps only for the first 2 points. Since the rest of it seems a little make me confused to followed. Restart the hardy.. and I got that ticking sound disappear when I'm in idle. :)