Yes I *have* done that
The point is that I had to figure it out myself and hack the file. Why isn't this in the latest version of code if you identified it a year ago???
and if the bug is still there, is it possible that the "recent comments", "random photos" etc palletes might also still show mature thumbnails? I've tested it now and it definately does show - so unless I have old files, the bugs are still there.