Acer 8100 does not connect on wpa encrypted wlan

[sleipner]

My Acer Travelmate 8100 does not want to connect to my WLAN network anymore, after I switched from WEP to WPA encryption with preshared key. 2 other PC's, one older HP Pavilion ze4400 and one PC with a 3Com card have no problems with Karmic with this configuration.

The Acer has no problem connecting with Windows XP, btw.

System used: Karmic
---
Architecture: i386
CRDA: Error: [Errno 2] No such file or directory
DistroRelease: Ubuntu 10.10
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
IpRoute:
 192.168.0.0/24 dev eth1 proto kernel scope link src 192.168.0.104 metric 2
 169.254.0.0/16 dev eth1 scope link metric 1000
 default via 192.168.0.1 dev eth1 proto static
Keyfiles: Error: [Errno 2] No such file or directory
Package: network-manager 0.8.1+git.20100810t184654.ab580f4-0ubuntu2
PackageArchitecture: i386
ProcEnviron:
 LANGUAGE=nb_NO:nb:no_NO:no:nn_NO:nn:en
 LANG=nb_NO.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
Tags: maverick
Uname: Linux 2.6.35-22-generic i686
UserGroups: adm admin cdrom dialout lpadmin netdev plugdev sambashare

[Book 'em Dano (heymrdjd)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately, we cannot work on this bug because your description didn't include enough information. You may find it helpful to read "How to report bugs effectively" http://www.chiark.greenend.org.uk/~sgtatham/bugs.html. We'd be grateful if you would then provide a more complete description of the problem.

We have instructions on debugging some types of problems at http://wiki.ubuntu.com/DebuggingProcedures

At a minimum, we need:
1. the specific steps or actions you took that caused you to encounter the problem,
2. the behavior you expected, and
3. the behavior you actually encountered (in as much detail as possible).
Thanks!

[Book 'em Dano (heymrdjd)]

Please execute the following command, as it will automatically gather debugging information, in a terminal from the computer that you are experiencing this issue:

apport-collect 500494

also in the terminal, copy and paste the output of each of the following commands:

sudo lshw -C network

iwconfig

[sleipner (andreas-zieritz)]

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[sleipner (andreas-zieritz)]

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[sleipner (andreas-zieritz)]

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[sleipner (andreas-zieritz)]

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[sleipner (andreas-zieritz)]

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[sleipner (andreas-zieritz)]

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[sleipner (andreas-zieritz)]

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[sleipner (andreas-zieritz)]

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[sleipner (andreas-zieritz)]

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[sleipner (andreas-zieritz)]

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[Launchpad Janitor (janitor)]

[Expired for network-manager (Ubuntu) because there has been no activity for 60 days.]