"Ghost talents" hotfixed
Now this is a fun bug. Between patch 2.4.3 and patch 3.0.3 (which was the big pre-Wrath patch), the talent trees for all classes changed a lot. Among other things, this involved removing some talents. And apparently, when these talents were removed from the game, some players there were specced into them got to keep them, even though all their other talents were reset. The affected talents were as follows:
Warlock: Improved Lash of Pain
Warlock: Fel Stamina
Shaman: Totemic Mastery
Shaman: Improved Lightning Shield (Rank 3)
Paladin: Precision
Rogue: Fist Weapon Specialization
So if you think you've been critting more than you should with fist weapons, or your succubus has been Lash of Paining more than seems right, that's probably why. This bug has now been hot-fixed out, and players will no longer gain benefits from these talents.
[Thanks, Kvothe]