I loved them to begin with, but I got slightly burned out from reading too many of them in a row. Going straight from the big, epic climax of one book straight into the slow build-up of the next doesn't really work, and I started to forget which bits of information related to which story. There were also a few sections that were particularly annoying.

Recently I've been alternating Dresden with other reads. That's worked very well and helped me get back into enjoying the series. And when the books are good, like Changes, they're un-put-down-able :o)