Topic: Anyone here have stuck dust/dead pixels they're dealing with?q

I recently purchased a 3DSXL with Luigis Mansion and got Mario 3D Land free all for $200. Everything was great until I found what looked like dust in the center top screen. Tried wiping it off but it goes no where. Only see it if the system is off or the screen is all black. During gameplay I never notice it. Was tempted to return it but I guess it's not a big deal. Plus Bestbuy is a good 30-40 min drive (i hate long drives). Anyone else keep theirs if they find something like this or exchange?

I didn't notice mine until well after I had begun using it. It's in the lower left portion of the touch screen, so I don't notice it during play.