OK, this is a weird one. I've noticed that I can't always turn my DNA on while it's charging. I have to unplug the USB cable then turn it on, then plug it back up. Is anyone else experiencing this, and is this just one of those odd 'HTC quirks' I'll get used to? What's happening when I hold down the power button while charging with the phone off is I'll get the slightest little vibration followed by flashing soft keys, which flash as long as I hold the power button down. If I unplug the USB cable, it powers up normally. It's obviously not a major thing, but it sure is weird. This is on a stock device, too. Any ideas?