I've got to know if anyone else has experienced this, and figured out a way to fix out. I was almost done with the DLC, actually on my way to the vault. You know that poisonous cloud on the lower level of the room with the holograms? Well, I went in there, to get the password, but the game never recognized that I came out. I'm still being poisoned continuously, even though I backtracked all the way to the suite. I've tried everything. I slept for days at a time, tried using the autodoc (I know it only heals limbs, but it was worth a shot), restarted the game, wandered into the same poisonous cloud and the other one earlier in the level, even entirely uninstalled and reinstalled the DLC itself. Nothing. I'm still being continuously poisoned by a gas cloud I'm nowhere near. I only have so many stimpacks, and that health drain is fast. I can go through a dozen in less than a minute, just to keep myself alive. I had saved before I realized what was going on, and my last save is so long ago that it's just not worth it. (Yes, I know that's incredibly stupid.) So far, the only thing that's sort of worked for keeping me from dying is to uninstall the DLC, but then I lose (probably permanently) all my stuff that was taken from me when I started the DLC. (As well as everything specifically Dead Money related. I ended up in my underwear with no weapon.) Does anybody have any ideas, or am I just going to have to wait until a patch comes out that maybe fixes this? Or maybe just take a hammer to the disc. Right now, that's sounding pretty good.

this happened to me too but i dont have any idea what to do