Hey just wanted to mention this to people. I was noticing my MacPro's HDD clicking (normal clicking, not click of death clicking) more often, much more so than when I installed it. As it turns out, when I checked it with disk utility it needed some minor repairs. Kinda strange for a new drive, but no worries.
Slapped in my install CD and repaired my HDD with disk utility, now that I have been using it all day I can say that it seems to have returned to normal. It's not that I cant hear it any more, just not as much.