I had this problem on my old MBP, where over time the cable attached to the MagSafe adapter would only supply power to the MBP in certain positions and not in others. This same problem appears to be happening on my new MBP with the new adapter, and it took far less time for it to happen. A few questions: Has anyone else run into this issue with the new MagSafe adapters? If the Apple Store replaces mine with a new one, what can I install to prevent this from happening again? Thanks!