When you start the vampire's lair, the thralls and other vamps are friendly, I get that, but also wolves, bandits, I ran past a drauger and a skeleton.....they were all completely non-hostile towards me.

Glitch?

The support thread is http://www.gamesas.com/topic/1533214-relz-alternate-start-live-another-life-7/.

Have you actually left the lair yet? Once you do the hostility begins like normal.