htc arrive shuts down during the night

[Jetface]

So after bringing back the last one, I switched it out for another new one. Which rebooted over night the first night. The second night it just shut off before I went to bed and then a second time during the night. All I had done was add emails and music from my computer. As well as add Amazon Kindle, Amazon.com, Netflix and The Weather Channel.

I'm not exactly sure what to try now other then go get another new one :-/