I feel like I may be going exactly the same way as you. I'm around half way through book 4 at this point and I'm already kind of feeling a bit bored of the same issues. It doesn't help that thus far the characters range from bearable - Dresden who really is boring as fuck, I don't dislike him but don't particularly like him either. All the way to oh would you fuck off - Murphy, that bitch is just fucking annoying and any scene with her in I am hoping she just fucking dies already....