Ok so I sent the camera back to Pentax, and YEY they were speedy in repairing, and only had the camera for 6 days. But BOOOOOO they haven't actually solved the problem

It says that there has been a standard PCB repair, but I have taken a few quick snaps this morning and although a couple of pics are ok, the others still have red bading on them... not happy!

Like someone else said, I have lost any faith I had in Pentax... really starting to regret not going for a Canon instead

sorry to but into the thread... I would be interested to know what the outcome was to this problem.
I have just got my K100D back from Pentax, as the USB port was broken (it pushed into the camera body when I went to download pics... although under warranty Pentax said there was evidence of impact, which is a lie as the camera has never been dropped/banged etc.... but that is whole new issue)
yesterday I happily snapped away, and had no problems at all... I took pics this morning, again no problems... this afternoon however I have horizontal banding You can see the banding when viewing the pics on the screen, and they print out too....
Really do not want to be without the camera again as it's like losing a limb
just wondered if Pentax found a problem?

Thanks in advance