I might be going nuts, but is anyone else getting an intermittent flicker from the backlight? Full screen dims randomly and will sometimes brighten right back up, sometimes not for a while. I returned my first N5 thinking it was a hardware thing, but my replacement did it several times this morning. Before you ask; yes, auto brightness is off. I tried setting my screen timeout to a much longer interval and that didn't help either. Most of the time I see this in either the browser or games. I tried looking for some sort of power saving screen dimmer (like my Asus tablet does when a page is loading in the browser) but couldn't find anything. The dimming is a little akin to the reduced brightness you'd see if you turned the screen away from you by 30 degrees or so. For a while I convinced myself I was accidentally turning the phone away from me, but that's not it either? Is this a feature rather than a bug? Did I get two bad units? (seems unlikely) I had a Gnex for 2 years and never ran into this.