I am currently in Act 1 with the Rogue. While attempting the robbery at the Mayor's mansion I discovered that my skills Stealth and Climbing seem to be frozen and cannot be trained any higher. Wandering all around in all areas with stealth on my skill does not increase beyond 65. Climbing is stuck at 38. Either failing or succeeding to climb any number of things fails to increase the skill (including vines at mayor's, gate at volksville, various trees, rocks at aqueduct, and others). Many of the places where it seems I need a higher climbing skill (mayor's house, aqueduct) using the climbing kit also does not work.
Please help, this is a game ruining bug.
Side note: I was eventually able to improve stealth, but _only_ by exploiting another bug (involving the bracers of stealth)