Alex, I have been able to inspect <span style="font-size: 12pt;">probably hundreds of the new ball series of cleaners after use from consumers and all have shown some dust leakage through the filter. </span>
<span style="font-size: 12pt;">Just to make sure everyone is on the same page, the dust collects inside the filter and the outside surface is supposed to be clean.</span>
<span style="font-size: 12pt;">Even still, the post motor hepa filter would be capturing anything that gets past.</span>
<span style="font-size: 12pt;">My dyson dc59 (cordless) has the same filter setup and after months of use it has not shown the same kind of leakage. I can see some very fine dust has passed through the cyclones, but not through the filter. </span>
<span style="font-size: 12pt;">Alex, you bring up another point about how upon emptying the three separate chambers can contaminate eachother. That is one possibility to explain your experience. But for me, hundreds of machines don't lie, this is a design I have never liked.</span>
<span style="font-size: 12pt;">To clarify, I am not a dyson hater. After all, why would I own twelve of them including an almost new model if I didnt like them?</span>
<span style="font-size: 12pt;">I think you would find that there are many on this site who liked dysons, most simply dont chime in. By the way, our webmaster is completely impartial and will not ban you for having a different opinion.</span>
<span style="font-size: 12pt;">Scott</span>
<p class="MsoNormal"> </p>