I have just synced an album (ripped from CD) and it appears twice on iPhone iPod and I can't figure out why as when I look at it in iTunes it is one album but shows as 2 on the iPhone like I said.
I don't think it has anything to do with the update. I've had this issue before, and I fixed it somehow. Mostly it was because the info on some of the tracks were a little different. Like at the end of the album name there would be a blank space.
That could be it, I have noticed that one album has the artist as Mika then the other has it as MIKA so I am completely confused as I have changed the info a bunch of times, I guess I could re-do it and see what happens 🙂