Yesterday I was wondering around with my summoner, went into stony creek cave, cleared it out. Went outside to see random bandit charging my way, I killed all bandits and checked everywhere before going in. Second later, I see guy in full steel plate armor rushing at me from north and followed by his buddy another bandit, I killed them both. Suddenly my dremora lord says: "A challenger has appeared", I see 3 vampires running at me from same way the two bandits came...I ended up slightly confused about all this.
Also when I started my new 2h character got quest for golden claw and went on my way to Bleak falls barrow, I barely cross river and I hear: "You picked a bad time to get lost, friend" and see two bandit chiefs running at me, barely survived that, two chiefs vs level 2...seems hardly fair fight and such weird encounter, have walked that path like 5 - 6 times now and this is first time that happens.