iTunes 7.3.1 is suppose to fix this issue.
I would not recommend downloading iTunes 7.3 unless you absolutely need to. I was greeted to this error: “The iTunes Library file cannot be saved. An unknown error occurred (-50)” after iTunes attempts to upgrade the library. It seems every version of iTunes has some problem or another after install, but this is the first time I’ve had some such error.
Apple’s message board indicates that many people on Mac OS X and Windows are having the problem. I see a few people who have a large library and have the library on a external hard drive as I do, but it’s not clear that this is the cause. What seems to be the cause is some sort of permissions issue. Possibly. Hopefully Apple gets this one fixed soon.
Update 07/01/07 10:54 AM: There’s suggestions to use this Apple tech note to recreate your library. The only problem with this tech note is it will delete any customizations in the library, like ratings and playcounts. I’m going to revert my install to iTunes 7.2 until Apple comes out a fix.
Update 07/02/07 12:29 PM: MaxFixIt is covering the iTunes error now. They have several suggestions including checking for iTunes add ons, Disabling APE for iTunes and restarting in safe mode. I tired all the suggestions and none of them worked. I’m going to play with Tiger Cache Cleaner and see if it will clean up anything.
Update 08/02/07 5:55 PM: Fixed! I removed most of my podcasts, most of them were video podcasts. Once of them must have been screwed up in the iTunes database.
Update 07/06/07 3:49 PM: I re subscribed to some of the podcasts, video and audio, since deleting them all. So far there’s been no problem with any of them. They are syncing with my AppleTV and my iPod. I didn’t add them all though. There maybe some that I didn’t add that maybe causing the problem.
If you don’t like the idea of deleting all of your podcasts, try deleting a few at a time. Starting with the video podcasts. Be sure you delete the whole podcast, not just the individual episodes.