There is a skill "Poison" on PR class that you can learn at low level but it requires book and I think that you didn't remember to leave this book and let to learn this skill free. I know that this isn't an important thing, but given that I saw it, I wanted to draw attention to it^^ .
did u actually BUY posion skill on PR ? thats pure example why they didnt put autolearn, not to buy such skills :D
awaiting reboot, fixed