I have deployed 6 of this cards at a customer site because the cards tested well in the lab. But in the field I am seeing the card hang and we quit receiving packets. This is on Ubuntu 12.04 with the 3.11.6 kernel. If I disable the interface and re-enable it, the data flows again. I see there is a later kernel available, but the change notes don't indicate that this particular problem is resolved, and don't seem to be changes in areas that would control this behavior.
We use the card in monitor mode 100% of the time, and it only receives data on the 2.4 Ghz band. 3 of the 6 cards have demonstrated the hang problem.
Anyone seen this?