Originally Posted by jms698 
I, of course, have the same issue. It is still not resolved (see
this thread).
Try turning on live view and see if you get the bouncing picture fault. If that happens then we can see this as a common fault that affects a number of K20d.
I don't think it is the fault of the firmware update itself. It probably is just the update the triggers this fault in a camera that is already faulty.
Good luck having this thing repaired. Apparently the repair needs a really specific piece of software, which only Pentax USA and Pentax Japan have access to
. Please keep up us to date on the progress.
I have now been in contact with Pentax service center here in sweden, they told me it could be a fault in the service menue, the one only they can acces with special hardware/software, I was glad to hear that they had just that equipment so they would be able to go in and reload the entire software. And in worst case leave it with 1.00 and I will never ever go to 1.01 (hot pixels are now my friend)
I will send my camera tomorrow and they say I will have it back before my tripp to england in septembre, hope they are right