ath9k and AMPDUs

What does it mean when ath9k shows AMPDUs queued increasing, but completed remains the same? I'm seeing this in a case where it appears I have lost connectivity to the AP, though it still shows as Associated.

AMPDUs Queued:             939          0         0         0
AMPDUs Completed:          872          0         0         0

Thanks,
Ben

Ben Greear <[email protected]>
Candela Technologies Inc  http://www.candelatech.com