I just killed my first Dragon Priest. I have no idea what these things are because I am not progressing through any of the main storyline yet, just doing the misc. quests and whatnot. So please, refrain from posting any spoilers for me. You might be asking what it dropped...[I know I was]... nothing! I play on expert and I am roleplaying as a monk, wearing robes only, no magic.
To make a long story short -- it took me about 20 minutes to kill the thing and it did not drop any loot. Like I said, it was my first one. Is this something that happens frequently?