The game is back up, but reportedly there are several isuses. I have no verified these myself, but several players reported these:
-not being able to unzerk after having gone berserk
-statting only yielding what can be described as base stats, give or take minor str variations
There may be more issues, so right now I would suggest the game is at PLAY AT YOUR OWN RISK status.
I'm not sure if there is one central problem that if fixed will fix everything, we'll just have to wait and see.
EDIT: Vampa reports that after some crashes, you can unzerk without issues, but after other crashes unzerking is impossible. Either way, zerk at your own risk.