Ive picked up a quest worth 8k xp but its not in the log and ive got red circles i cant get rid of despite killing the monsters there for ages im trying to work out if its a loot drop but i dont know?
If you have a quest with no circle in the Korin zone then the quest is in the dungeon known as the "vent" directly west of the town in the middle of the zone (not the one at the top left corner of the zone).
If you have a circle that doesn't disappear first make sure you're tracking the quest and killing the right monster. Also, you should realize that if the quest has more than 1 objective (more than 1 circle) then none of the circles will disappear until you've completed all of the objectives.