
When it comes to the keyboard and mouse, I'm an equal opportunist

And this is where nightmare begins.
I kiiid, I kiiid. But seriously this is when the keyboard starts doing funny things. It will seem to refuse to scroll all the way to the top or bottom of the dialogue entries, because the mouse has moved the default option away from the center. When you press E, sometimes it will activate something you didn't mean to.
This mod is like a mini patch for the input handling in the dialogue menu. It's kinda hard to describe. If you've been annoyed by the controls in the dialogue, just try it, chances are you will like it. If not, it's just one tiny file, delete it and off you go. No need to clean saves or anything, it is purely a GUI thing.
http://skyrim.nexusmods.com/mods/27371/