Purchased songs don't always appear in library...
Is anyone else having this problem with iTunes 11? On a couple of occasions I've purchased a song, seen it download, but then can't find it in my library (which I have sorted by date added). To get the song to download I have to go back to the store, try to purchase it again, and then select the "redownload for free" option. However, you're not always given that option - sometimes it just says you've already purchased the song, do you want to purchase it again.
Weirdly the songs do not show up in the all purchased music section of the store, so no way to download from there... This is definitely an iTunes 11 issue as it's never happened before.