When I connect the iPhone to my Mac Pro, the "spinning beach ball" appears in iTunes and I have to force quit because it becomes unresponsive. I do not have this issue with my iPad; it seems to be something with the phone. Prior to this issue, when I connected my iPhone to iTunes, it would take 6-7 minutes to sync. When I connected my iPad, it took about 30 seconds. This is true even when the same content is being synced. i.e. I added 4 PDFs to iBooks. When I synced those with the iPhone, it took 6-7 minutes. With the iPad, about 30 seconds. Any ideas?