NetworkManager verbindet nicht mit WLAN

Liebe Leute,
vielleicht kann mir jemand helfen: Ich bekomme auf meinem Notebook mit SUSE 11.4 keine Verbindung des NetworkManagers mit meiner WLAN-Station zustande. Hier die Logdatei des NetworkManagers:

Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0) starting connection ‘philips’
Aug 23 21:29:21 linux NetworkManager[1458]: <info> (wlan0): device state change: 3 → 4 (reason 0)
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled…
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started…
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled…
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting…
Aug 23 21:29:21 linux NetworkManager[1458]: <info> (wlan0): device state change: 4 → 5 (reason 0)
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0/wireless): access point ‘philips’ has security, but secrets are required.
Aug 23 21:29:21 linux NetworkManager[1458]: <info> (wlan0): device state change: 5 → 6 (reason 0)
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Aug 23 21:29:21 linux NetworkManager[1458]: <warn> Failed to update connection secrets: 1 802-1x
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled…
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started…
Aug 23 21:29:21 linux NetworkManager[1458]: <info> (wlan0): device state change: 6 → 4 (reason 0)
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled…
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting…
Aug 23 21:29:21 linux NetworkManager[1458]: <info> (wlan0): device state change: 4 → 5 (reason 0)
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0/wireless): connection ‘philips’ has security, and secrets exist. No new secrets needed.
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Config: added ‘ssid’ value ‘philips’
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Config: added ‘scan_ssid’ value ‘1’
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Config: added ‘bssid’ value ‘00:12:bf:1f:4a:04’
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Config: added ‘key_mgmt’ value ‘NONE’
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Config: added ‘auth_alg’ value ‘SHARED’
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Config: added ‘wep_key0’ value ‘<omitted>’
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Config: added ‘wep_key1’ value ‘<omitted>’
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Config: added ‘wep_key2’ value ‘<omitted>’
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Config: added ‘wep_key3’ value ‘<omitted>’
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Config: added ‘wep_tx_keyidx’ value ‘0’
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Aug 23 21:29:21 linux NetworkManager[1458]: <info> Config: set interface ap_scan to 1
Aug 23 21:29:21 linux NetworkManager[1458]: <info> (wlan0): supplicant connection state: disconnected → scanning
Aug 23 21:29:25 linux NetworkManager[1458]: <info> (wlan0): supplicant connection state: scanning → associating
Aug 23 21:29:25 linux NetworkManager[1458]: <info> (wlan0): supplicant connection state: associating → associated
Aug 23 21:29:25 linux NetworkManager[1458]: <info> (wlan0): supplicant connection state: associated → completed
Aug 23 21:29:25 linux NetworkManager[1458]: <info> Activation (wlan0/wireless) Stage 2 of 5 (Device Configure) successful. Connected to wireless network ‘philips’.
Aug 23 21:29:25 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) scheduled.
Aug 23 21:29:25 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) started…
Aug 23 21:29:25 linux NetworkManager[1458]: <info> (wlan0): device state change: 5 → 7 (reason 0)
Aug 23 21:29:25 linux NetworkManager[1458]: <info> Activation (wlan0) Beginning DHCPv4 transaction (timeout in 45 seconds)
Aug 23 21:29:25 linux NetworkManager[1458]: <info> dhclient started with pid 14546
Aug 23 21:29:25 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) complete.
Aug 23 21:29:25 linux NetworkManager[1458]: <info> (wlan0): DHCPv4 state changed nbi → preinit
Aug 23 21:30:10 linux NetworkManager[1458]: <warn> (wlan0): DHCPv4 request timed out.
Aug 23 21:30:11 linux NetworkManager[1458]: <info> (wlan0): canceled DHCP transaction, DHCP client pid 14546
Aug 23 21:30:11 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 4 of 5 (IP4 Configure Timeout) scheduled…
Aug 23 21:30:11 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 4 of 5 (IP4 Configure Timeout) started…
Aug 23 21:30:11 linux NetworkManager[1458]: <info> (wlan0): device state change: 7 → 9 (reason 5)
Aug 23 21:30:11 linux NetworkManager[1458]: <warn> Activation (wlan0) failed for access point (philips)
Aug 23 21:30:11 linux NetworkManager[1458]: <info> Marking connection ‘philips’ invalid.
Aug 23 21:30:11 linux NetworkManager[1458]: <warn> Activation (wlan0) failed.
Aug 23 21:30:11 linux NetworkManager[1458]: <info> Activation (wlan0) Stage 4 of 5 (IP4 Configure Timeout) complete.
Aug 23 21:30:11 linux NetworkManager[1458]: <info> (wlan0): device state change: 9 → 3 (reason 0)
Aug 23 21:30:11 linux NetworkManager[1458]: <info> (wlan0): deactivating device (reason: 0).

Wie es aussieht, bekomme ich keine IP-Adresse zugewiesen, aber warum? An der Hardware scheint’s nicht zu liegen, da unter Windows die Verbindung klappt. Wenn ich den NetworkManager kille und die Verbindung händisch mit ifconfig, iwconfig & Co. aufbaue, läuft sie auch, es scheint also am NetworkManager zu liegen?

Hier noch die Daten meiner WLAN-Karte:

Ethernet controller: Atheros Communications Inc. AR5413 802.11abg NIC (rev 01)

Kann mir jemand weiterhelfen? Jetzt schon mal vielen Dank!
Wolfgang

KDE oder Gnome? Falls KDE: Versuch mal das Networkmanager Plasmoid, oder den Gnome Networkmanager.

Gruß
Uwe