Don't grow skills in teaching (The Elder Scrolls 5: Skyrim)
First taken a lesson increases the skill by +1; the following lessons from the same teacher with the same skill +1 is not given, only the money is written off and shown as strip of experience skill is filled. It turns out that for the level of each of the skills can only be 1 to learn.Of the mods just right. patches and mods for the NPC running away from vampires/dragons + skse
It happened sometimes, help download of to training. But I understand the problem is permanent in nature, and not, from time to time. Heard that sometimes such a waste of time arises from the fact that the NPC too much gold (more than 20000 - 30000), but, I understand that the fashion of gold is not worth it. So at the moment I see only one more or less sane option - try to disable these unofficial patches, they often bring their new bugs.
at_sagor
Always play with the unofficial patches, has never been because of them of bugs with every update bugs only get smaller.
By the way, mod NPCs run from vampires and dragons bugs is, the only NPCs not always run away with him. Put this mod, so I have him killed Balitora in Whiterun and several of the Persians.
KPOT1987
Saw somewhere an add-on that allows you to configure kolichestvo get lessons, look for it, can help
A full reinstall of the game helped :) skse to put has not - yet everything works fine (skse 1.7.2 beta was, most likely because it is buggy)