I couldn't get any air in mine either... But really we shouldn't have to invent ways of keeping dust out of these units. I haven't had mine for a couple of weeks now and I'm so frustrated when it comes back if it's not perfect I'm going to try to sell it at a huge loss and grab a cybook as I should have done.
Just wanted the darn lights.
Really shows you why Sony is loosing money though doesn't it?