ToME: the Tales of Maj'Eyal

Seems like there were a lot of balance changes... I dies in Carn whatever, north of amon sul with a skeleton warrior in level 11 in beta 4. I now have a skeleton archmage in beta 6 that is level 15 or something and I'm not even through the same progressive quests that I was the last time? Did xp req's change or something?

beta 4 was a bit of a grind in terms of levelling, beta 6 has had the levels rebalanced for levelling faster...