I don't know the rules of thumb on this, but I think it at least shows that the jury is being careful and methodical. In my mind, that's a good thing. I think it probably helps DW.
I say that for a reason. The prosecution's case is very narrow. The forensic evidence in the MH, period, end of story.
The case could be decided very quickly if that was all the jurors are looking at. If they are looking at more than that, I think that helps Dee-Dub.
That may indicate they have decided on the other things and are hashing out the child porno charges.