Pick lock will not improve

I've been spamming pick lock since I got it. All totalled about 50 minutes. I'm drow and have max int. It has not budged once. I've tried the chest in the galadon thieves guild, a storage door in the area above Arkham, and a cabinet. None of the locks were beyond my comprehension and I've tried 2 different types of picks. Nothing. There is lag on the pick so it much be trying. Am I doing something wrong?