i had dust in mine just after two weeks of careful use without the case...and i am getting my replacement today...hopefully the new one doesn't run into this problem.

when i took my curve to a local store and asked the rep abt this, she showed me her pearl and it had a lot of dust in it. she said its not uncommon to see dust under the screen for the blackberries.

so the new one i'm getting is goin to have a full body skin, so may be it wont catch dust under the screen...well, hopefully anyway!