Rogue Poison Bugs
 

So Conium Darkblade in Dagnor's Cauldron gives you the wrong poison during a turn in.

Conium Darkblade the Dwarven NPC on Island in Dagnor's Cauldron
*QUEST* 3 Wasp Poison Sacs and 30 gold for vial of Wasp Poison

Currently he gives Regalis poison which is a weakening poison. That's supposed to be the reward for the west karana poison quest. Haven't tested out the WK one yet.

WK one is as followS:

Gindlin Toxfodder in W. Karana -2989.60, -13399.48
*QUEST* 1 Crow's Special Brew, 2 Spider Venom Sacs and 20gp for vial of Weakening Poison

Both have been fixed to give the correct reward.