Глючит сеть в 12.04 LTS

Wifi продолжает сбрасывать код безопасности и запрашивать аутентификацию. не будет подключаться сейчас, даже если я заново отредактирую подключение или введу вручную во всплывающем окне, которое постоянно происходит. Кажется, застрял в петле. Не повезло, перезагрузка несколько раз. Результаты: peter @ peter-laptop: ~ $ lspci

 00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD/ATI] RS300 Host Bridge (rev 02)
 00:01.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RS300 AGP Bridge
 00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] OHCI USB Controller #1 (rev 01)
 00:13.1 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] OHCI USB Controller #2 (rev 01)
 00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] EHCI USB Controller (rev      01)
 00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD/ATI] SMBus (rev 1a)
 00:14.1 IDE interface: Advanced Micro Devices, Inc. [AMD/ATI] Dual Channel Bus      Master PCI IDE Controller
 00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD/ATI] Device 434c
 00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] IXP200 3COM 3C920B      Ethernet Controller
 00:14.5 Multimedia audio controller: Advanced Micro Devices, Inc. [AMD/ATI] IXP150 AC'97 Audio Controller (rev 01)
 00:14.6 Modem: Advanced Micro Devices, Inc. [AMD/ATI] IXP AC'97 Modem (rev 01)
 01:05.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV350/M10 [Mobility Radeon 9600 PRO Turbo]
 02:00.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306/7/8 [Fire II(M)] IEEE 1394 OHCI Controller (rev 80)
 02:02.0 Ethernet controller: Qualcomm Atheros AR5212/AR5213 Wireless Network Adapter (rev 01)
 02:03.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
 02:04.0 CardBus bridge: ENE Technology Inc CB-710/2/4 Cardbus Controller
 02:04.1 FLASH memory: ENE Technology Inc ENE PCI Memory Stick Card Reader Controller
 02:04.2 SD Host controller: ENE Technology Inc ENE PCI Secure Digital Card Reader Controller
 02:04.3 FLASH memory: ENE Technology Inc FLASH memory: ENE Technology Inc:

peter@peter-laptop:~$ ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:0f:b0:3a:19:54  
          UP 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)
          Interrupt:19 Base address:0xa000 

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:900 errors:0 dropped:0 overruns:0 frame:0
          TX packets:900 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:66460 (66.4 KB)  TX bytes:66460 (66.4 KB)

wlan0     Link encap:Ethernet  HWaddr 00:11:f5:29:f1:38  
          UP 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)
peter@peter-laptop:~$ sudo iwconfig
[sudo] password for peter: 
lo        no wireless extensions.

wlan0     IEEE 802.11bg  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off

eth0      no wireless extensions.