atheros ar5001 wireless: device not managed

[mciancio]

Binary package hint: network-manager

On eee 901 Atheros Communications Inc. AR5001 Wireless Network Adapter (rev 01) is not recognized .
Network-manager says: device not managed.

This is my /etc/network/interfaces:

$ cat /etc/network/interfaces
auto lo
iface lo inet loopback

iface dsl-provider inet ppp
pre-up /sbin/ifconfig wlan0 up # line maintained by pppoeconf
provider dsl-provider

auto wlan0
iface wlan0 inet manual

Other info:
$ lsb_release -rd
Description: Ubuntu karmic (development branch)
Release: 9.10
$ apt-cache policy network-manager
network-manager:
  Installed: 0.8~a~git.20091005t192303.1d28ad1-0ubuntu2
  Candidate: 0.8~a~git.20091005t192303.1d28ad1-0ubuntu2
  Version table:
 *** 0.8~a~git.20091005t192303.1d28ad1-0ubuntu2 0
        500 http://it.archive.ubuntu.com karmic/main Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
Architecture: i386
Date: Mon Oct 12 10:55:15 2009
DistroRelease: Ubuntu 9.10
Gconf:

IpRoute:
 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.104 metric 1
 169.254.0.0/16 dev eth0 scope link metric 1000
 default via 192.168.1.1 dev eth0 proto static
Package: network-manager 0.8~a~git.20091005t192303.1d28ad1-0ubuntu2
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-13.44-generic
SourcePackage: network-manager
Tags: ubuntu-unr
Uname: Linux 2.6.31-13-generic i686