iTunes updates always seem to come with some growing pains, and yesterday's release of iTunes Plus and iTunes 7.2 doesn't look like it's any exception. We're hearing reports that the new iTunes Plus "Upgrade My Library" feature doesn't work as expected (when it works at all), that Plus downloads are incredibly slow and frequently time out, and that the preference to always see iTunes Plus tracks when they're available occasionally resets itself. On top of all that, the intrepid Apple sleuths over at TUAW have discovered that while iTunes Plus tracks might be DRM-free, they still contain your name and account information -- which seems like a fair piracy-prevention compromise to us, but has apparently rubbed a few people the wrong way. We're not sure if the various iTunes Plus problems are in iTunes 7.2 itself or just the result of pent-up demand for DRM-free EMI tracks overwhelming Apple's servers, but you can bet that Steve's minions are busy getting iTunes 7.2.1 ready as we speak.