Glo How common are stuck pixels?

So I've had my Glo for about a three weeks and love it - back to reading as much as I used to before selling my Nook. The other night I noticed a stuck pixel for the first time and was wondering how common they are, if it will ever go away on it's own (had one appear and go away a few weeks later on a tablet) or is one a sign that more might show up?

It is really small and at the very bottom on the lower right about an 1/8 of an inch from the bottom so it is on the lower banner (actually just below the wrench icon). Because of that it is a non issue from a reading perspective and because it is stuck "off" it can only be seen when the light is on and even then only in lower light situations.

I still have as few days to return it for a replacement if I want but I'm really wondering if I should bother.

How common is it to have one or two stuck pixels?

Thanks