I just bought this game yesterday and I've been totally addicted. There is one new bug in the patch though that plagued me after I took a break from marathon gaming it to eat and watch Lost. Now sometimes when enemies retreat you get spammed with WARNING CHECK INVALID ENTITY before the game CtDs, it was rock solid before. Hopefully there will be a patch for it soon.
My only complaint with the game is that I wish that the multiplayer was more like the single player. In that you had a large world map and people/clans could battle for control over keeps and your armor/weapons remained persistent, oh and having skills and levels that progressed.... Multiplayer just seems like a big deathmatch. :\