Mac Mini (Intel) Ticking/Clicking Sound

I purchased a new Mac Mini (1.8, 80gb, 1gb, superdrive) about a week ago, and have enjoyed using it ever since, however I recently there is a ticking or clicking sound coming from the unit which sounds to me like it may be the hard disk either starting up, or parking down, this happens intermittently and doesn't seem to follow any strict pattern.
Opening Activity Monitor and viewing the Disk Activity tab reveals that there is usually a small amount of data being written to the hard disk when the ticking occurs, however this is not the case 100% of the time.
The disk appears to be fine according to its S.M.A.R.T. status, however I've had "verified" disks fail on me before, therefore don't really trust the S.M.A.R.T. monitoring.
Does anyone have any suggestion on what this may be?

The drive is actually a Fujitsu.
It's now started clicking again after being left on
over night, I've closed everything and tried running
fs_usage, but could see no distinct pattern when the
sound occurred.
This is happening to me with my 80GB Fujitsu Mac Mini Intel. It started after about two weeks of use. This also happened to my G4 Mini with the stock Seagate drive. My old G4 eventually beat itself to death over the course of a month and I have a feeling this one is going to do the same. My second drive (Toshiba I think) didn't have any problems so it may be that only certain drive models are affected.
I also downloaded and ran fseventer, which again
revealed nothing, when it first clicked after opening
the app it said the machine was writing to Finders
plist file, however nothing registered after this
with subsequent clicks.
Yeah, fs_usage doesn't seem to reveal anything significant either.
I'm still in the dark with this, and have a hard time
believing it to be normal.
I agree, I think there's something wrong with the Mac Mini power controller. My drive mainly does it when it is left running overnight. As soon as I sleep and wake the drive, the noise goes away - to me that suggests a controller just needs reset. I've resorted to sleeping the drive overnight and when I'm out until Apple post a fix for it. The drive head slamming into the mechanical stop is not normal in the same way a train slamming into the mechanical stops at the station is not normal. Some control is being messed up - according to the last site, it is usually caused by the fact that the servo calibration is messed up and cannot properly govern the speed and position of the head assembly on the drive and this is worsened by temperature.
http://kiza.kcore.de/software/declunk/
http://forums.macrumors.com/showthread.php?t=232114
http://macminiforums.com/forums/arch...php/t-162.html
http://macminiforums.com/forums/arch...php/t-332.html

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salimfadhley wrote:
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