Aironet on Ubuntu/Feisty cannot obtain IP address

I've got a dual-boot, HP Pavilion ze4400 with clean install of
Ubuntu/Feisty. Cisco Aironet 340 works in Windows, but cannot obtain IP
address in Linux on wifi networks (open and/or encrypted).

The Airo card is supposed to work "out of the box" in Ubuntu/Feisty. But I
think there is a driver problem. Why am I getting "Rx invalid nwid:3270"
in iwconfig when the essid is right? (See below).

TIA - John Redmond

sudo lshw -C network
*-network
description: Cisco Systems
physical id: 0
version: 340 Series Wireless LAN Adapter
slot: Socket 0
resources: irq:3
*-network
description: Ethernet interface
product: DP83815 (MacPhyter) Ethernet Controller
vendor: National Semiconductor Corporation
physical id: 12
bus info: pci@00:12.0
logical name: eth0
version: 00
serial: 00:0b:cd:a5:d5:00
size: 100MB/s
capacity: 100MB/s
width: 32 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical tp mii fibre
10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=natsemi
driverversion=2.1 duplex=full ip=192.168.0.60 latency=90 link=yes
maxlatency=52 mingnt=11 multicast=yes port=twisted pair speed=100MB/s
resources: ioport:8c00-8cff iomemory:d0003000-d0003fff irq:11
*-network
description: Wireless interface
physical id: 1
logical name: eth1
serial: 00:40:96:33:16:aa
capabilities: ethernet physical wireless
configuration: broadcast=yes multicast=yes wireless=IEEE 802.11-DS

iwlist scan

lo Interface doesn't support scanning.

eth0 Interface doesn't support scanning.

eth1 Scan completed :
Cell 01 - Address: 00:30:AB:22:AE:E8
ESSID:"Wireless"
Mode:Master
Frequency:2.437 GHz (Channel 6)
Quality=86/100 Signal level=-52 dBm Noise level:-88
dBm
Encryption keyff
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
Extra:bcn_int=100

wifi0 Scan completed :
Cell 01 - Address: 00:30:AB:22:AE:E8
ESSID:"Wireless"
Mode:Master
Frequency:2.437 GHz (Channel 6)
Quality=98/100 Signal level=-47 dBm Noise level:-88
dBm
Encryption keyff
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
Extra:bcn_int=100

sudo iwconfig eth1
eth1 IEEE 802.11-DS ESSID:"Wireless"
Mode:Managed Frequency:2.437 GHz Access Point:
00:30:AB:22:AE:E8
Bit Rate:11 Mb/s Tx-Power=15 dBm Sensitivity=0/65535
Retry limit:16 RTS thrff Fragment thrff
Encryption keyff
Power Managementff
Link Quality=98/100 Signal level=-47 dBm Noise level=-92 dBm
Rx invalid nwid:3270 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:1852 Missed beacon:0