Hi -

Got this finally to work on Edgy on my T43. I followed the steps as directed here, but there was a key step missing from the steps here that didn't allow me to load the new driver. I had to unload the modules for ieee80211 and ieee80211_crypt to get the new ipw2200 to load. This was the cause of all my 'unknown symbol' errors. You can unload the modules via this:

rmmod ieee80211
rmmod ieee80211_crypt

When I run 'modprobe ipw2200' I don't get errors and it loads fine. Also, there is no /usr/lib/hotplug/firmware directory in Edgy. Just copy the files to /lib/firmware instead.

Hope this helps,