Ive had this game since release with no problems and today while in primm I noticed that some npc's had no sound to their voice. I thought it may just be some bug so I reloaded an old save before any of the voices had disappeard and it was there as well. Some times the npcs have voice sound but sometimes they do not and its kind of irritating just wondering if anybody else is experiencing this and if so is it a known issue. I havent seen anybody else post on this from two different new vegas forums so im not sure if im the only one.

Thanks in advance to all who may help