Hi.
Since the November 2009 update, the Ghouls also drop Pumice Stones very often. The problem with this is that every stone that drops seem to prevent a skull from dropping, so the rate is much lower than it used to be. I'm not saying it's impossible for both a skull and a stone to drop at the same time, I'm just saying it hasn't happened to me.
A THF was trying to get two for a couple of newbies yesterday and had been at it for more than 2 hours when I got to Gusgen Mine. He asked me to replace him so I ended up having to get three (one more for the other newbie I brought).
Previously, as BST75/WHM37 it took me an average of 8 kills to get one. This time it was more in the range of one in 30 (1/30).
On another run I tried BST75/THF37 for Treasure Hunter and that made it worse. I gave up after about 80 kills, came back /WHM and one finally dropped at the 20 kills mark.
Edited, Nov 16th 2009 8:09am by Couriercarrie