Well I'll tell you guys this..
Not long ago I attempted a defrag (I use O&O's). I generally do this every 1 to 2 weeks. Out of the 76 gigs available, I am only using 36 (so I have 50 free). Usually it only takes 2 hours max to defrag. This time around, when I last checked the time remaining was at 5 hours, and was steadily rising...
Something fishy is going on... After thinking carefully about the things I have done to the system in the past week, all I did was install the Omega 1.4403 Dets (which gave me a 430 point gain in 3DMark 01, and a gain in 03). Otherwise I haven’t done anything on the system besides gaming.
The video card, CPU, and memory are running better then they ever have before... but the hard drive is running at less than half it's original speed.
Everything was closed (including F@H) during both the defrag, and the benchmarks (again, by using EndItAll). Sandra tested the drive w/o Windows Caching enabled. I'll check the ATTO scores tomorrow, as the machine is at a friend’s for LANing, and I'm currently at home.
I am really, really lost here. I could always stick the drive on another system and see what scores I get, which would at least get me as far as figuring out weather or not it's the mobo, or the HDD itself. Honestly I don’t know which I'd rather be stuck with replacing (I hope it never comes to that).
BTW, my former, faster PCMark score can be seen
here