iPod touch Dust under brand new touch

[cifang]

I just exchanged my first ipod for crashing at least 3 times a day on apps, or completely in the first 14 days of my purchase for another one. This one although seems to be working perfectly (so far 1 day in) there is a speck of dust under the glass. I don't think it's a dead pixel since the touch is off, is this a good enough of a reason to exchange it again? I'm pretty sure it came like this as I have barely used it. I know all of these devices will get dust eventually, but I'm also going to assume the problem is going to get worse at a more rapid pace than the other devices because of maybe a severe misalignment with the gasket? And that'll probably be when I don't have the 14 day return guarantee from BestBuy. What should I do?(don't want to sound like i'm really picky to the clerks)

 

[rgarjr]

If it really bugs you take it back again, who cares what they think.