I recently acquired a Pentax *istD, it was listed as a "demo" model, It suffered from something I never even knew about: "hot pixels". I kept seeing these bright spots on my jpegs. I sent the camera back for repair or refund. I purchased another *istD with a lower shutter count, an open box item. closer to new. It has hot pixels also! but not as many. So, I'm thinking, although I want a Pentax to utilize all my older lenses, maybe I should get a D70s like I had before, it didnt have any hot pixels, but come to find out, they suffer from the same thing since they use the same sensor. My question: is this the only sensor from years past that had this problem? If I go looking for a deal on an older Canon (XT or 20D or whatever), Pentax (K10 or whatever), Nikon whatever, will I run accross this problem again? Or was this purely a Sony 6mp problem? Does the Pentax K100 have this same sensor?