Don't worry about missing the entry reguarding the Vorunthul, you can get it from the entry about the Aldvari if I remember rightly, just go through the different links in that set of entries.
If you don't mind another tip, there's one particular fight where it's very important to remember to take the item that's dropped, sinse it necessary to get another item you will be needing.
the dropped item is something fairly inocuous, and I missed it the first time around and had to go back and do that litle section again. I also believe that particular point is fairly close to the entrance so you might have found it already.
so, what do people think of the new Exp system? Personally I like but I think the Gm will have to introduce a way of grinding for non-combat skills and powers like restoration which you don't seem to get xp for, even when you use them in combat.
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)