I just now experienced my very first bug in not only this but any other Bethesda game. The "Blood on the Ice" quest is glitching out on me, I need to talk to Viola but she's nowhere to be found and I certainly didn't kill her.
I guess if you go long enough you'll eventually find a bug, but I have to be some kind of record holder. 200 hrs in Morrowind, about 200 in Fallout 3, maybe 300 in New Vegas, over 1200 (you read that right) in Oblivion, and over 130 so far in Skyrim. And I've only just now had my first bug. Ever. Weird.