You should use the WDidle3 program anyway as your load count is going to rise much more quickly than it would otherwise and WD only warranty the drive up to a certain count (300k?)

I permanently retired the WD from my NAS. Just not worth the headaches - it made my NAS performance go to crap when mixed with the other drives I had in there. I bought a Seagate 2TB for the NAS and it has been performing flawlessly. The WD is permanently installed in my Windows PVR which I've also just migrated to WIndows 7 x64 from Windows XP.

I'm still running the WD with the compatibility jumper set, which I know I don't have to do for Windows 7. Mark, do you expect there to be a performance benefit if I were to run with the drive in its factory un-jumpered (4k) mode? I'd probably have to back everything up and first reformat the drive, right?