My comment area is all abuzz (and by abuzz I mean - dang!!) with chatter about the supposed nerf of Slave Pens and Underbog. Considering how much noise this was generating I decided to investigate for myself and try to put the rumors to rest.
I spent last night going through both instances at least 5 times each. I'm not as familiar with Slave Pens so I mostly stayed in the front part before the sentries. I did wander past them once, but I didn't see enough there to make any strong determinations about the farming status.
Out of five visits here the first chest spawned in the middle of the bogstruck pack on the left-hand side all five times. This was not farmable for me at level 70 so I'm assuming this chest is simply not farmable.
Four of my five visits also had the adamantite node spawning behind the Fen Ray pet - another unreachable location. I tried to mine it but I was busted. One of the five times I entered SP, this first node popped on the left side next to the bogstruck pack. This spot looked unfarmable to me, but I didn't bother testing that theory. Considering their aggro radius when I tried to get the chest, I didn't expect a different result for the ore.
So in conclusion... Slave Pens = Nerfed!!
This was the instance I was more concerned about, since I'd been actually farming ore in here. Not that it isn't easier to collect ore with a flying mount, it is :) But on those days when I'm not having much luck, it's nice to have the option of gathering ore without competition.
All five times I entered UB the first chest was on the left by the 3-pack of mobs at the water's edge. This location is not farmable, so essentially the chest farming is confirmed to be nerfed for the first half of the dungeon. No more easy gold 4 you!!
On the other hand, the ore and presumably herb spawns were all basically the same. I am not an herbalist so I can't guarantee that nothing was changed. But the ore nodes were all spawning in the same locations as before, as was the hibiscus. So I'm guessing they didn't change the gathering nodes at all.
Also, in the interest of thorough investigation, I visited the back half of the dungeon 5 times. This took a lot more time than I thought, but this is the pain I endure for my readers =) The news is better here because the second chest appears to be unchanged. Four of the five times I entered, it was under the stairs. The fifth time it was by the Fen Rays in the corridor, an unfarmable location. The ore node also popped in both of its usual spots in the corridor and I was able to gather both of them (the one by the hunter boss with a bit more difficulty, but still do-able).
Conclusion for the Underbog: Blizzard wants you to work for your free gold <lol>! No more free lunch on the chest, you have to get past the sentries and loot the second one. But all the other goodies appear to be the same, so for my money it's still a viable farming location. Realistically, I didn't expect this chest farming to be a permanent thing anyway. We should all assume at some point that Blizz will nerf the second chest too, so if you want to take advantage you better do it now people!
Underbog... Chest 1=Nerfed, Ore/Herbs=Not Nerfed, Chest 2=Not Nerfed
Now you may discuss...
***For those of you new to my blog, I have other articles on stealth farming here***