Automatically goes to menu

I bought my 32GB iPod touch about a month+ ago, and lately it has been acting up.

Whether I'm listening to music, watching a video, using safari etc... it stops and goes to the menu. I'll be touching nothing, listening to a song, the music stops and goes to the main menu.

It has happened a lot the past couple of days while listening to music.

Anything I can do about this?

Thanks!