intel ipw3945 + CentOS 5

Sziasztok!

Van egy Dell D420-om Inter ipw3945apw wifi kartyaval amibe nem tudok eletet lehelni. A dmesg-ben a kovetkezok szerepelnek:
iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, 1.2.26ks
iwl3945: Copyright(c) 2003-2009 Intel Corporation
iwl3945: Detected Intel Wireless WiFi Link 3945ABG
phy0: Selected rate control algorithm 'iwl-3945-rs'
iwl3945: loaded firmware version 15.32.2.9

A nm-tool kimenete:
- Device: wlan0 ----------------------------------------------------------------
Type: 802.11 WiFi
Driver: iwl3945
State: disconnected
Default: no
HW Address: 00:18:DE:0D:27:0B
Capabilities:
Supported: yes
Wireless Settings
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points
SKY38732: Infra, 00:1E:74:0E:97:4D, Freq 2412 MHz, Rate 48 Mb/s, Strength 58 WPA
SpeedTouch74365E:Infra, 00:90:D0:F6:FE:AA, Freq 2412 MHz, Rate 48 Mb/s, Strength 75 WEP
SKY17835: Infra, 00:1B:2F:A7:17:F8, Freq 2437 MHz, Rate 54 Mb/s, Strength 34 WPA

A message fajl-ban a kovetkezo van:
Oct 14 11:03:09 localhost dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 9
Oct 14 11:03:18 localhost dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 13
Oct 14 11:03:31 localhost dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8
Oct 14 11:03:39 localhost dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 11
Oct 14 11:03:50 localhost dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 13
Oct 14 11:04:03 localhost dhclient: No DHCPOFFERS received.

A /etc/init.d/network pedig a kovetkezot:
Determining IP information for wlan0... failed.

Nem nagyon tudok ezzel a hibauzenettel semmit sem kezdeni. Van valakinek valami otlete?

Arkhein