It may seems that i have a problem with this quest...as you can see from the print screen..i killed the last raid and npc wont talk to me >.<].....http://yfrog.com/mnshot00011xp
i still have the quest items like spear and pots.
try remove the pet. I know pailaka gets bugged when done with pets, it was same on retail.
removed the pet once several times.... same thing happens.