and sometimes when you load a city "wrong" some dialogue never shows, for instance, i quick traveled to Whiterun and went strait to the blacksmithing women outside and i couldn't get her to sell me anything until i went into the shop and reloaded Whiterun again.
Sometimes they're just not ready to sell yet. If you see her walking towards her shop from another destination she wont be ready to sell just yet. This can happen around the 8am marker. I don't see that as a bug at all, more a nice variation in the way people are.
After well over 100+ hours of gameplay I've only had 1 fatal crash and 1 significant bug, the markarth guards bug. Thats it.