Comment 38 for bug 378156

Not solved for me.

ii linux-image-2.6.31-14-generic 2.6.31-14.48
ii linux-backports-modules-karmic-generic 2.6.31.14.27

# iwconfig wlan0
wlan0 IEEE 802.11bgn ESSID:
          Mode:Managed Frequency:2.412 GHz Access Point:
          Bit Rate=2 Mb/s Tx-Power=20 dBm

I've seen bitrate 0, 1 Mb, 2Mb, but never the 54Mb it should be, unless I manually set it, but even then I still don't get decent speeds and I get the frequent dropped connections described in #414560.