Felipe, I have my Intel 5100 wireless card working again. This is what I did: 1. Purged the firmware-iwlwifi 0.27 from my system.
2. Installed this one instead: firmware-iwlwi 0.24~bpo50+1 Binary firmware for Intel Wireless 3945, 496 I've downloaded this .deb from the lenny backports: http://packages.debian.org/lenny-backports/firmware-iwlwifi 3. In order to troubleshoot I disabled the Network-Manager 4. Enabled the interface and configured it: r...@aristoteles:~# ifconfig wlan0 up r...@aristoteles:~# iwconfig wlan0 essid <ESSID_NAME> r...@aristoteles:~# dhclient wlan0 done! 5. I prevent the firmware-iwlwifi 0.24 to be updated. r...@aristoteles:~# echo firmware-iwlwifi hold | dpkg --set-selections Check: r...@aristoteles:~# dpkg --get-selections | grep firm firmware-iwlwifi hold Definitively the culprit is the new driver. I tried the testing and the unstable driver but they just do not work properly. They will freeze my laptop as soon as I try to connect to a wireless network. My fix is just a band-aid and it can't be considered a good fix, but it works. I hope this helps, cheers! Eng. Andres Migliazzo.