iTunes 11.0.5 Download Released to Fix iTunes in the Cloud Issue
Apple has released iTunes 11.0.5 for download for Mac and Windows users, to address an issue with iTunes in the Cloud some users are experiencing:
This update corrects an issue with iTunes in the Cloud, where some purchases may download or play unexpected items.
The files sizes for individual downloads is as follows: OS X (187.46 MB ) Windows (84.99 MB) Windows64 (86.68 MB). You can find the latest update by going to the Mac App Store and navigating to the Updates tab.