Madwifi was working fine under Kubuntu feisty until I had to reboot and couldn't get it back up. I thought that was a good time to upgrade to gutsy. In trying to get madwifi back up I found I lacked wlanconfig, which used to be available on apt-get as part of madwifi-tools. But that pkg is no longer available, so I downloaded madwifi-0.9.4. I got rid of the old modules per the instructions but when I got to the make stage there were many error messages. I copied the include files in glibc-2.7 into /usr/src/linux-headers- 2.6.22-14/include/asm-i386 but that isn't where ath_hal/uudecode is looking for them. I could probably figure that out but there are many more incompatibilities and I wonder if there is a simple solution.

Hard to say without looking at the specific error messages. Can you post the errors here in [ code] tags?

There are 7 "No such file or directory" messages (ref. ll 20-33 in uudecode). There are two (ll. 40 and 70 in uudecode) that say "expected ')' before '*' token", and about 39 more. plus about 50 warnings. The first few I could probably handle but with so many I wonder if I have incompatible versions, or if my make file isn't the right one. I tried to get the error list to write to a file but al I got was:
Checking requirements,,, ok
Checking kernel configuration... ok
/usr/bin/make -C /lib/modules/2.6.22-14-generic/build
SUBDIRS-/home/jdt/downloads/madwifi-0.9.4 modules
make[1]: Entering directory
'/var/src/linux-headers-2.6.22-14-generic'
HOSTCC /home/jdt/downloads/madwifi-0.9.4/ath_hal/uudecode
make[1]: Leaving directory
'/usr/src/linux-headers-2.6.22-14-generic'

When I used 0.9.3 I had no trouble. I have a feeling that since the new version is so new they haven't included everything yet. I was goird to post on the Kubuntu forum first but couldn't find how to enter a question.

I would have sent you the whole errpr listing, but 100 lines is too long to key in. If there is a way to get it into a file, please net me know.

you know the new kernel has all the drivers built in and the need for madwifi is in not there it is part of the netconfig stuf now so search around. you will not that Ubuntu likes to change the whole system per kernel that is what is done so you got this cool new kernel and not the programs gui program to connect I am sure you will apt-get it you figure it out. next time if you want a new kernel and the old system down load the source and compile and install. good luck. you will have to build madwifi per kernel.

your new kernel is built with a 4.0 or 3.36 gcc and if you try to build programs with the old 2.9 the it will fail pluss thre new madwifi has been written for the new gcc compilers. you als need the full source for gutsy. sow now you took old headers and put it in the new headers start over. the new system like mine do not use wlan the tools are now under the the distro configuration tools I have not used wlan confige sence the 2.4.31 kernels in slackware.
kubuntu used the wlancofig incorperated with the kde net work settings most of all the newer distros do this pclinux slacware fedora yum suse yast etc. good luck.