Comment 2 for bug 759529

I can confirm that on Natty, the stability of 802.11n on iwlagn driver is still poor. My problems however is on reconnecting situations, the driver will go nuts on on connect and disconnect cycle :)

[ 8705.759680] wlan0: deauthenticated from 00:23:f8:2f:e1:a2 (Reason: 3)
[ 8705.790277] cfg80211: All devices are disconnected, going to restore regulatory settings
[ 8705.790285] cfg80211: Restoring regulatory settings
[ 8705.790291] cfg80211: Calling CRDA to update world regulatory domain
[ 8705.796255] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain
[ 8705.796263] cfg80211: World regulatory domain updated:
[ 8705.796267] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 8705.796273] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 8705.796278] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 8705.796282] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 8705.796287] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 8705.796291] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 8706.333696] wlan0: authenticate with 00:23:f8:2f:e1:a2 (try 1)
[ 8706.336336] wlan0: authenticated
[ 8706.336382] wlan0: associate with 00:23:f8:2f:e1:a2 (try 1)
[ 8706.340128] wlan0: RX AssocResp from 00:23:f8:2f:e1:a2 (capab=0x411 status=0 aid=1)
[ 8706.340135] wlan0: associated
[ 8706.349695] cfg80211: Calling CRDA for country: FR
[ 8706.355707] cfg80211: Updating information on frequency 2412 MHz for a 20 MHz width channel with regulatory rule:
[ 8706.355715] cfg80211: 2402000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm)
[ 8706.355719] cfg80211: Updating information on frequency 2417 MHz for a 20 MHz width channel with regulatory rule:
[ 8706.355724] cfg80211: 2402000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm)
[ 8706.355727] cfg80211: Updating information on frequency 2422 MHz for a 20 MHz width channel with regulatory rule:
[ 8706.355732] cfg80211: 2402000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm)
[ 8706.355736] cfg80211: Updating information on frequency 2427 MHz for a 20 MHz width channel with regulatory rule:
[ 8706.355740] cfg80211: 2402000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm)
[ 8706.355744] cfg80211: Updating information on frequency 2432 MHz for a 20 MHz width channel with regulatory rule:
[ 8706.355749] cfg80211: 2402000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm)
[ 8706.355753] cfg80211: Updating information on frequency 2437 MHz for a 20 MHz width channel with regulatory rule:
[ 8706.355758] cfg80211: 2402000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm)
[ 8706.355761] cfg80211: Updating information on frequency 2442 MHz for a 20 MHz width channel with regulatory rule:
[ 8706.355766] cfg80211: 2402000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm)
[ 8706.355770] cfg80211: Updating information on frequency 2447 MHz for a 20 MHz width channel with regulatory rule:
[ 8706.355774] cfg80211: 2402000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm)
[ 8706.355778] cfg80211: Updating information on frequency 2452 MHz for a 20 MHz width channel with regulatory rule:
[ 8706.355783] cfg80211: 2402000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm)
[ 8706.355786] cfg80211: Updating information on frequency 2457 MHz for a 20 MHz width channel with regulatory rule:
[ 8706.355791] cfg80211: 2402000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm)
[ 8706.355794] cfg80211: Updating information on frequency 2462 MHz for a 20 MHz width channel with regulatory rule:
[ 8706.355799] cfg80211: 2402000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm)
[ 8706.355803] cfg80211: Updating information on frequency 2467 MHz for a 20 MHz width channel with regulatory rule:
[ 8706.355807] cfg80211: 2402000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm)
[ 8706.355811] cfg80211: Updating information on frequency 2472 MHz for a 20 MHz width channel with regulatory rule:
[ 8706.355816] cfg80211: 2402000 KHz - 2482000 KHz @ KHz), (N/A mBi, 2000 mBm)
[ 8706.355821] cfg80211: Regulatory domain changed to country: FR
[ 8706.355823] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 8706.355828] cfg80211: (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm)
[ 8706.355832] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (N/A, 2000 mBm)
[ 8706.355836] cfg80211: (5250000 KHz - 5330000 KHz @ 40000 KHz), (N/A, 2000 mBm)
[ 8706.355840] cfg80211: (5490000 KHz - 5710000 KHz @ 40000 KHz), (N/A, 2700 mBm)
[ 8721.524049] iwlagn 0000:02:00.0: Aggregation not enabled for tid 0 because load = 3
[ 8733.537767] iwlagn 0000:02:00.0: Aggregation not enabled for tid 0 because load = 4
[ 8745.771890] wlan0: deauthenticated from 00:23:f8:2f:e1:a2 (Reason: 3)

That kind of logs keep on going forever. If I disable 802.11n, everything works smoothly.

My device is:
02:00.0 Network controller: Intel Corporation Centrino Wireless-N 1000