I've run iTunes on Windows, OS X, and even on Linux, but it was always fairly snappy. Recently however, due to some update, the performance is dreadful. I went through my music collection to make sure artists/songs are named correctly a few days ago, which I've done before, but when I corrected a group of tracks to an amended artist name, instead of it changing instantly, it brings up a small window and slowly changes each one, in all taking about a minute. A entire minute to alter a few IDv3 tags?! It never did this before? I've not seen a similar thread on the subject, but I can't see why I'd be the only one affected?