I read the first 8(?) Initially, I loved it, but when the characters with all this power are constantly acting like they're 4 years old, the story loses something. I don't care to read the rest of the series.
One other thing that bugged me, in the first book the Myrdraal (sp?) are these very powerful and frightening creatures that you don't want to mess with. By the fifth book, any 10 year old with a stick can whoop the things like nobody's business. It just didn't make sense.