I have a Thinkpad T40 running Ubuntu 10.10. I want to connect to wireless networks with WPA encryption; they appear in the network list, but are grayed out. The card does support WPA, since it works in Windows. In 10.10 the wireless works just fine with unprotected and WEP networks, but cannot connect to any WPA networks.

The card is a Cisco Aironet Wireless 802.11b.

I've been reading a lot of forum posts trying to find a solution, but either encounter threads where no solution was found or answers longer apply (most date from 2007, since this isn't the newest of computers).

Here is the output of sudo lshw -c network:

*-network:1 DISABLED
  description: Wireless Interface  
  product: Cisco Aironet Wireless 802.11b
  vendor: AIRONET Wireless Communications
  physical id: 2  
  bus info: pci@000:02:02.0  
  logical name: eth1  
  version: 00  
  serial: 00:02:8a:78:6a:44  
  width: 32 bits  
  clock: 33MHz  
  capabilities: pm vpd bus_master cap_list rom ethernet physical wireless logical  
  configuration: broadcast=yes driver=airo latency=64 maxlatency=4 mingnt=4 multicast=yes wireless=IEEE 802.11-DS

Thanks, any help would be greatly appreciated!