This procedure is not working for me. It successfully activates the wireless card, and my network manager detects the signal from the router (great!). When I click to connect to this network, a progress bubble appears, reaches 28%, with the words "Activation stage: Configuring device." The process halts there. I have what I think is a kernel panic, although I guess it could be a hard xorg crash (mouse won't move, nothing changes on-screen, VTs refuse to appear, X zap doesn't work, etc.) Anyone have a suggestion?
The iwl4965 driver (Version 0.42 I think) is now included with Gutsy, you might want to remove all the firmware you installed and then reinstall linux-ubuntu-modules-2.6.22 and try that.