I just got the Minecraft Xbox and I love it!

Unfortunately, the other members of my household have had more of a chance to play it than I have so far.

When my Xbox goes idle, I get a slideshow of recent achievements that have been achieved by everyone else other than me (who hasn't even launched a game yet). I don't want to see this at all- just my own achievements, only.

I made sure to ask that the other people created their own profiles before playing, but that doesn't seem to have had any effect at all :c

How can I stop this and other content (such as games they've purchased that I have no interest in playing) from showing up where I can see it?