Comment 36 for bug 144621

It is very easy to update manually the iwl4965 driver to the latest build, follow these steps:

1) download the latest iwlwifi driver from www.linuxintelwireless.org
http://intellinuxwireless.org/iwlwifi/downloads/iwlwifi-1.1.21.tgz

2) install linux-source: sudo apt-get install linux-source
go in /usr/src: cd /usr/src

3) locate the linux-source-2.6.xxx.bz2 package and unpack it:
sudo bunzip2 linux-source-2.6.xxx.bz2
sudo tar xf linux-source-2.6.xxx.tar
sudo ln -s /usr/src/linux-source-2.6.22 /lib/modules/`uname -r`/source

4) then unpack and compile the driver:
tar xzf iwlwifi-1.1.21.tgz
cd iwlwifi-1.1.21
sudo make
sudo make install

5) And load the modules with
sudo modprobe iwl4965

you can check if setup is successful (iwl4965 should be displayed as an output) by:
sudo lsmod | grep iwl

The new driver will be loaded automatically at each reboot