I started the pickpocket thing with Pershek, but since it was going badly, I just went my ways... a day later, I get the "objective failed: steal Persheks dagger" message and now Pershek's pissed with me and won't teach me how to lockpick. Shit sucks, I just wanna be able to open chests that I find scattered around the area, but it seems I'll have to sneak through Rattay and unlock random doors, just to train my lockpicking.
Though the idea of Pershek standing there for several hours waiting for me to grab that dagger from his pocket is kinda funny.