unit turns itself back on after power down

I use my e280 during my morning workout.  I have turned it off and gotten the normal “Goodbye” message and come back the next day to find that it’s playing or that it has played and discharged the battery.  Any ideas?

It’s posessed!

You may be right!

Try using the “hold” switch (on top near the headphon plug) after you turn it off… ?!