After upgrading toi SP2, I decided to merge C: and D: so I did a restore with the CDs. Worked great and restored my system to SP1, single C: drive.
Thats when I noticed this annoying little drive access was gone that started after I upgraded to SP2. After doing the SP2 thing, every few seconds my drive light would flash and I’d hear the heads click. I figured it was normal and I hadn’t noticed it before. Now that I downgraded to SP1, I still see the occasional drive access but the click is barely audible.
So I am sticking with SP1.