Excellent. Thank you.
I took great care to test Movie functions again. The freezing (which was very evident and immediate before) is gone. I recorded videos at quality 5 and 70 and they were fine in terms of size and could be played.
I tested the 00:01:31 ETR and that worked fine, too
Finally I tested CHDKPTP and remote shooting of JPEG and DNG, looked at its liveview and UI overlay and all was fine with those.
So A720 can be crossed off our list. That leaves G7 and I800 with the bug they shared
EDIT: forgot that we're also still working on I960...