Don't know about serious issues but here's what the update includes. "iTunes 5 features a new even more powerful instant search, including the new Search Bar which helps you find exactly what you are looking for in iTunes or from among 2 million songs on the Music Store, folders for organizing playlists, and new Parental Controls for music, music sharing and podcasts. iTunes 5.0.1 features several stability improvements over iTunes 5".

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….