7 sounds about right, I also was stuck on level 15 for about a week, mostly because I kept trying to go for harder enemies so I could catch up on exp... and then dying. I really hate that you lose exp for dying, or at least that us Taru can't really level on our own as much. Now I'm level 17, I've been killing tough hares near the La Theine Plateau entrance of Valkurm Dunes and getting 120-140 exp per kill, just working my way up to that subjob now. I can't wait for that WHM sub! =D