I just got my reader. Looks perfect. I notice, though, that when I try to power it up using the supplied AC adaptor - any place (on the brushed metal) that I touch give off a slight electric shock. When I unplug the cord it stopped. Also, using the usb to power the reader doesn't give off any shock, only the AC adaptor. Anybody experienced anything like that? Should I return the unit?? I'm loath to return the reader, after it took so long to get here ---