Razr Maxx, brand new phone, just bought today. Came with GB out of the box. Immediately updated to ICS, did a hard reset, and it barely even boots up before it gets really laggy (5-10 seconds from screen tap to response), screen goes black and I cannot get it to turn back on with the button, and it eventually reboots itself. It did this about 5 times earlier then started working fine. That is, until I plugged and then unplugged the USB cord into my computer. Everything worked as normal when I plugged it in, but when I unplugged it, it started doing the same thing as earlier again. Any idea WTH is going on?