I have 2 Drain Vitality Shouts? One with 1 word, and one with 2 words?

I have THREE!! One from Dimhollow. and two which came with M for Death. These two are the same except one does twice the damge of the other(1 dam to all stats per sec for 20 secs and 2 dam for 20secs!!)

I just hit this. 40 hours into my new character, staying level one, and I've suddenly lost all interest in continuing because of a stupid bug that should have been fixed immediately. I know it costs them money to submit patches, but considering how they've let easily fixed things go ignored - like Esbern's Potion - I've nearly had it with this game. I have to wonder if they're even trying at this point.