Lately, my iPhone 4 doesn't sync podcasts correctly. For example, if I listen to a podcast in my car and get half-way through, sometimes when I sync it to iTunes, the played-to location doesn't sync correctly. This used to never happen. I often will listen to podcasts in my car, sync when I get to work, and then resume listening to it on my Macbook Pro in iTunes. Are there any bugs in the latest iPhone update that could cause this? Any known fixes?