Just wanted to make sure everyone had this, I've seen a lot of messages complaining that Arnova support never responds to the support emails.  Their support telephone number for US is 877-221-0205 (not on arnova website, given to me by archos support).  They answer promptly and are totally helpful.  They are sending me a replacement power supply, the one I had was shorting.  They also directed me to a factory data reset.  It's in the settings under privacy settings.

Hope this helps everyone