They DO sound like pogramming, but they sound like the game is recognizing them as actual possible dialogue entries. I'd start a new game and see if it persists. If it does, it may be that yur install corrupted. I'm only saying this because nobody else has mentioned this from what I've seen. I've seen this happen in Morrowind when the strings are seen as actual dialofue options, but it only happens under rare circumstances or bad mod-work.
