I just set my gtx260 for folding after an year without a rig, and i think my ppd are also very low. I though i would get more then 12.000 PPD
more info, on my thread: http://www.overclock.net/gpu-folding...7-low-ppd.html
Your 260 PPD looks right, but your i7 PPD is way off. Something isn't set right.
Edit: just went and read your other thread..