I have had iTunes as far back as I remember, and purchased a lot of stuff on iTunes. For a while, may be one year or more, I have used iTunes sparingly, but I, faithfully, updated it. Each update, even a minor one takes forever to install. Never has a program like that. But the last one failed twice, going to the bitter end, till I was able to install it from a manual download. No wonder that I, almost stopped using iTunes. I spend most of my time installing it!
For a while, also I saw two identical Apple Mobile Device Support items, and the last installation gave me an error for this item. Should I uninstall one or both items, and then reinstall? Do a clean install, hoping not to lose all the music?
I am getting to the point that I am starting not to care!
By the way, I got no response from Apple.