I bought a GBA last night, and I have heard about the dust problem here so I thoroughly checked it while playing a game with a dark background(easier to detect dust).
I found one right in the middle, it was the last platinum in the store so I was not sure if I should take it back, I figured they would only let me exchange with the cobalt one which I don't want.
This morning I found ANOTHER dust, on the right side of the screen, and just now, I get yet ANOTHER dust on the top of the screen....
Like I said, last night, I've checked like a hawk for dust and played long hours and only found one dust, so the two more dusts definetely came in later.
Before I go return my GBA SP, I wondered if anyone had the same problem as mine,
does your GBA SP get more dusts behing your screen as time goes?