I upgraded my Mac over the weekend and finally installed Leopard. The whole process was simple and went off without a hitch — I thought.
This morning I downloaded a few new programs from the App Store, plugged in my iPhone to sync. And... nothing! A little beep let me know the phone was plugged in and the battery was charging, but as far as iTunes was concerned, no phone.
A quick trip to the Internet showed that this is a relatively common problem for folks that upgrade. Here's the link to the Apple discussion forum that solved my iPhone issue. The solution is to reinstall iTunes — even if you're already using the current iTunes version.
So, now my iPhone is happily syncing again and I'm completely up-to-date with software. The bright side is now I get to test out the new features of iTunes 8 such as Genius and the new Visualizer.