Recently, the podcast artwork displayed on my iPhone has been incorrect. For example, my iPhone might substitute artwork for KCRW's The Business with the artwork from NPR's Fresh Air. Sometimes all of the podcasts show up with the This American Life artwork. Even stranger, sometimes artwork from Genius playlists will appear next to my podcasts. I tried unsyncing my podcasts and then resyncing them to my iPhone. That helped for a day, and then the artwork became corrupt again. Yesterday, I actually deleted all of my podcasts from iTunes and resubscribed to them all. I thought that would fix the issue for good, but today the problem came back. Is there anything I can do to fix this problem or might it be a bug within iTunes? thanks!