Last week, Apple released iTunes 9.0.1, which addresses a number of iPhone syncing issues as well as making some performance and stability improvements.
During our first hands-on look of iTunes 9, we noted two problems with and being unable to on their being checkmarked and therefore set to sync to the iPhone or iPod Touch in question.
Later, we discovered more problems with syncing in general, including wrong episodes being synced to playlists containing podcasts, podcasts failing to sync, etc. Smart Playlists, according to users, were generally messed up and did not behave as expected.
iTunes 9.0.1 has addressed all of these issues with the exception of the Smart Playlist problem. Podcasts are now properly synced, podcast episodes display in the correct order, and you can arrange apps regardless of their sync status.
The temporary workaround for new or existing Smart Playlists that no longer work as they used to is to uncheck "Live updating" in the settings.
iTunes 9.0.1 also addresses other issues, including performance issues that can lead to iTunes freezing or unexpectedly quitting, problems browsing the iTunes Store, and improved app syncing for the iPhone and iPod Touch.