Something

vyrus002:/home/vyrus# wpa_supplicant -Dwext -iwlan0 -c/etc/wpa_supplicant.conf                                                                                                     ioctl[SIOCSIWAUTH]: Operation not supported
WEXT auth param 4 value 0x0 - ioctl[SIOCSIWAUTH]: Operation not supported
WEXT auth param 5 value 0x1 - CTRL-EVENT-SCAN-RESULTS 
CTRL-EVENT-SCAN-RESULTS 
CTRL-EVENT-SCAN-RESULTS 
CTRL-EVENT-SCAN-RESULTS 
CTRL-EVENT-SCAN-RESULTS 
CTRL-EVENT-SCAN-RESULTS 
CTRL-EVENT-SCAN-RESULTS 
CTRL-EVENT-SCAN-RESULTS 
CTRL-EVENT-SCAN-RESULTS 
CTRL-EVENT-SCAN-RESULTS 
CTRL-EVENT-SCAN-RESULTS 
CTRL-EVENT-SCAN-RESULTS 
CTRL-EVENT-TERMINATING - signal 2 received
ioctl[SIOCSIWAUTH]: Operation not supported
WEXT auth param 5 value 0x0 - ioctl[SIOCSIWAUTH]: Operation not supported

vyrus002:/home/vyrus# ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:1b:24:fe:9d:98  
          inet addr:192.168.0.120  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::21b:24ff:fefe:9d98/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:39972 errors:0 dropped:0 overruns:0 frame:0
          TX packets:25050 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:49096596 (46.8 MiB)  TX bytes:2045020 (1.9 MiB)
          Interrupt:219 Base address:0xc000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:4 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:280 (280.0 B)  TX bytes:280 (280.0 B)

wlan0     Link encap:Ethernet  HWaddr 00:1c:bf:8e:38:cd  
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

wmaster0  Link encap:UNSPEC  HWaddr 00-1C-BF-8E-38-CD-65-74-00-00-00-00-00-00-00-00  
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

vyrus002:/home/vyrus# iwconfig 
lo        no wireless extensions.

eth0      no wireless extensions.

wmaster0  no wireless extensions.

wlan0     IEEE 802.11g  ESSID:""  
          Mode:Managed  Frequency:2.412 GHz  Access Point: Not-Associated   
          Tx-Power=27 dBm   
          Retry min limit:7   RTS thr:off   Fragment thr=2346 B   
          Encryption key:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

vyrus002:/home/vyrus# cat /etc/network/interfaces 
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
allow-hotplug eth0
iface eth0 inet dhcp