I'm not sure if there's a thread like this, but I searched and surprisingly found nada. So....
Lindil says, "I remember you, you were training in Lock Mastery..."
You ask Lindil about getting promoted to your next rank in Lock Mastery.
Lindil completes the promotion ritual and says, "Congratulations, *****, for mastering this skill!"
(You earn 200 exp. and 50 fame.)
HOORAAAAAAAAAAAAAAY!!!!!!!!