Falk,
Too funny, I was just sitting down to write the same details because I long ago read you, and other testers, found it this very issue. I also commend Pentax for allowing testers to post comments IN PUBLIC rather than the typical alpha/beta NDA type testing. That is completely unheard of in the biz these days...HoyaTax is to be given some "stars" for that part of the development. It is almost like a community developed body...and now that some aspects of my daily life have calmed down I can really look at it all and appreciate the boon the open-testing was to us out here...
Also, thanks for reminding the issue is indeed, so far anyway, restricted to some rather extreme temps, for whatever the reason be it environmental or using features which increase internal temps. I had also been writing to ask if people using LV/Video in shot bursts ever even notice the issue.
I like the body too much to write it off as bad body...other then the green line issue, if one has the funds to buy now, I have sort of changed my opinion and see no reason not to buy it, with a 3yr, warranty now if you want it...the GLS "green line syndrome" seems the only problematic design issue is know, nothing else seems to have come to the forefront, other than the inability to turn off "black frame extraction" on long exposures, but that to could be address in a FW release sometime in the future.
Glad woke and can't fall back asleep...excellent new details and points of view. I will add one observation, about those like me who have not purchased a K7, YET...I will add my comments are more from the POV in looking at an issue trying to understand the sequence which triggers the problem and also to find more input for those who have far better understanding of the engineering side of DSLR's...but agree antagonistic comments are never going to help people get their head around the issue and appreciate if the issue will affect them under the conditions they plan to shoot.
Just know there are many of us out here who indeed appreciate the work of all the testers, who have keep us out here in-the-loop with anything found...good or "not SO good" findings.