Keep having to reset my R1

[Stephan3838]

I got the R1 for christmas, and it will play a few songs and shut itself off, and to get it to come back on I have to reset it. I am actually on my second one and this one is doing the samething. I have upgraded the firmware, and still having the same issue. This also seems to be reset almost everytime I unplug it from my computer. Has anyone else had this issue and know of a fix?