Comment 49 for bug 293946

... within 6 feet of the router connection appears to be fine (but can still only manage 11Mbs rather than 54)

iwconfig gives ...

wlan0 IEEE 802.11bg ESSID:"HOWDEN-1969"
          Mode:Managed Frequency:2.462 GHz Access Point: 00:90:96:C7:95:61
          Bit Rate=11 Mb/s Tx-Power=20 dBm
          Retry long limit:7 RTS thr:off Fragment thr:off
          Power Management:off
          Link Quality=70/70 Signal level=-35 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:0 Missed beacon:0

but as I move further away - say around 20 feet - as soon as link quality drops below 60 the connection starts to become intermittent.

Running Windows on the same laptop gives a stable connection multiple walls and greater distances away.