In the MP3 selection, I can use the forward button all the time, but not always back
This has been a problem since day one, and does the same on both machines. You can always use the forward button to change between genre, CD, all music, and others. But you can't always use the back button. I assumed it worked the same as forward, but it doesn't seem to. I can test it out, because sometimes it will go back one, but will never continue to go back every time. Hope that helps, and I hope for once this is a real bug. Let me know if you need more info about this.