Hmm, I stuck with the name Slayer in my game every time. I also didn't change the name Slayer in the demo (can't remember if you could change the name in the demo, I know you couldn't change anything else).
Anyway, I'd recommend to any 360 owners to delete the cache if they are having issues. I'm positive it fixed my problem.
Aside from that plus not overwriting my saves, everything else is working fine so far for me on the 360. Love the game! So nice to have such a large world and actual itemization in a RPG *cough* DA *cough*.
