Yeah I updated to 11 since I generally upgrade any software I have. But iTunes 11 is fucking horrible. All I use iTunes for is syncing to my iPod to update my podcasts and put audiobooks onto it. But now they've gone and removed the bar on the left with all of your types of files and put it into a dropdown on the top left. Which is more annoying to manage. And then I plug my iPod into it, and I couldn't even see it was there until I looked around a while and saw a button on the right.
Then before, with iTunes 10, I could drag music from my computer onto the iPod settings on the left hand sidebar and it would copy over, not needing to add it to my music library and sync it that way. All in all, iTunes 11 is just a fricken headache now. Harder to move around (although to be fair, I bet one could get used to it), and you have to sync everything from within the library in iTunes. God, for what I use iTunes for, this offers me nothing and makes what I do an even more pain in the ass. I'm on Windows, by the way. I've heard it's less of a pain in the ass for Mac computers.
But I was able to downgrade to the latest 10.x version from oldapps.com ([link] for the 64 bit version - had to get the x64 bit version, even though it selected to install it into my x86 programs folder… can't figure that one out. Apple engineers are just morons with Windows it seems) and install that, after uninstalling iTunes 11. Although I had to open up the location of the iTunes Library.itl file (in C:\Users\[username]\Music\iTunes for me) and replace it with a backup iTunes made (in C:\Users\[username]\Music\iTunes\Previous iTunes Libraries). Just copy/paste the latest backup into the previous folder, rename it to iTunes Library.itl, and iTunes 10 was able to read it.