I just finished killing the dragon for one of the quests. I literally had just absorbed my first dragon "soul" and was walking towards my horse when it suddenly flees and this shadow looms over me.
Lo-and-behold, another dragon appeared and immediately tried to fry me. Keep in mind all of the other people who helped me before were already gone somehow.
To make matters worse, as I'm trying to find a good spot to shield from the dragon until my health reloaded via my healing spell a f'n troll has a random encounter at some farm and preceeds to charge after me right after. I finally manage to somehow get the dragon and the troll at a stand-off with each other and sprint away...only to watch my horse commit suicide by running into the dragon's breath. *Tear tear*

So, yeah. Epic fail on my part.