There is one particular crypt (dont ask the name, I have no idea) that has one of the rotating animal carving thingos on it. You know the bear, eagle, snake totems? Anyways, they usually have clues as to what order to put them in and it took about half an hour of me wandering around this large ruin to finally find the hint.... it was about 3metres lower than the puzzle... in the same room... covered in moss.
I wasnt happy
But this happens to me quite often and it doesnt help that I travel a lot with followers and/or dead thralls that obstruct my view and get in my way all the time!