I've recently managed to setup iTunes Match and have an iPhone 4S that I wanted to use the service with. The service works just as I'd hoped it would, but since I set it up on my phone, the labelling and scrolling now doesn't work properly in the Music app. For example, when I scroll using the right-hand side "alphabet bar" to show artists that start with a certain letter, it decides to show me artists which start with a letter earlier in the alphabet, as the attachment shows. Has anyone else had this problem and managed to fix it? I've tried turning iTunes Match off and then on again and neither seemed to fix it. At the moment, I can only see my music up to the letter V, past that and I can't scroll any further, which is less than ideal.