I've updated that list.
New nodes should work better.
As for orphans, as the difficulty code stabilizes you should get them less and less often.
Sorry for your troubles, I made a slight error in my 0.7.1.6 difficulty fix that essentially negated itself.
If you really want to know,
In my test code I had the last60blocks vector ascending(lower timestamp -> higher timestamp) wheresas in the actual client it was descending(higher timestamp -> lower timestamp).
As a result of this, the value I was checking for ended up being negative.
This should clear up completely within a day.
Again, sorry for any troubles this may have caused you. It was not intentional.