Originally posted by acarlay what iso are you getting those green line streaks?
FWIW ISO (higher) causes "noise" in an image and has nothing to do with sensor interpolation or dead or hot pixels as far as I know.
But to answer your question, I ran from 200-1000 ISO. I also did a 30 second hot pixel test (M Mode 30 sec exposure with lens cap on). and had over 15 hot and or dead pixels before I stopped counting.
I have spoken to the Regional Sales Manager from Don's Photo in Winnipeg and he is waiting on a call back from Pentax... Once I get clarification and what their disposition is, I will update here.