Anyone's iPhone doing this?: Day X - iPhone just been restored. All fine. Day X - rip a CD to iTunes - sync to iPhone - all fine. Day Y - rip another CD to iTunes Day Y - sync iPhone - Day X artwork turns into a black screen. Day Y artwork fine. Day Z - rip another CD to iTunes. Day X and Day Y artwork now a black screen Day Z artwork fine. Day Q - perform another restore - all artwork reappears upon syncing to iTunes. and repeat, and repeat. It's not exactly life threatening but it annoying. Any idea how to fix it?