Qt is a nice framework and great UI toolkit and it has many useful features and concepts. Most of us probably agree that Trolltech, lately Nokia, have done pretty nice job developing it. One of the latest advances in Qt is QML, which I find fascinating advancement.
However, I find some of the concepts badly designed or badly implemented, such as Model/View (the concept is fine, but implementation is not) and same goes for Phonon media framework. Some people say its the meta-object concept that drives them crazy.
All of this are obviously more or less subjective, but what features or concepts do you find annoying or burdensome to use in Qt and how do you circumvent around them?