Comment 71 for bug 259157

lspci

02:00.0 Network controller: Atheros Communications Inc. AR5008 Wireless Network Adapter (rev 01)

lshw

     *-network
          description: Wireless interface
          product: AR5008 Wireless Network Adapter
          vendor: Atheros Communications Inc.
          physical id: 0
          bus info: pci@0000:02:00.0
          logical name: wmaster0
          version: 01
          serial: 00:18:39:08:7d:c3
          width: 32 bits
          clock: 66MHz
          capabilities: bus_master cap_list logical ethernet physical wireless
          configuration: broadcast=yes driver=ath9k ip=192.168.2.100 latency=168 multicast=yes wireless=IEEE 802.11bgn
          resources: irq:9 memory:24000000-2400ff

I had to manage the connection in network-manager applet , remove /etc/network/interfaces and I got online. It took me a week to discover. But this posting helped me to do the trick.