I have upgraded the kernel to 2.6.32 and installed the latest ath9k driver in an attempt to enable N support on the wireless (i.e. to enable the use of the 802.11n capability) to enable speeds above 54Mbps.
Now it only connects at 1Mbps, the output of iwconfig is as follows:
wlan0 IEEE 802.11bgn ESSID:
Mode:Managed Frequency:2.412 GHz Access Point:
Bit Rate=1 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr
ff Fragment thr
ff
Encryption key
ff
Power Management
ff
Link Quality=51/70 Signal level=-59 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
Any suggestions?