Well, Sam doesn't have anything to do with fixing this bug.  Sam, like
myself, is one of the maintainers of the Debian package.  I don't use
Ubuntu, have no upload access to Ubuntu, and know nothing about its
release cycle.  So far as I know, the same is true of Sam.  Insofar as
Launchpad implies that Sam has anything to do with what ends up in
Ubuntu, it's not being particularly accurate.

I could only speculate on why the fix wasn't backported to Edgy, and
since I'm not involved in Ubuntu (only in OpenAFS), I don't want to do
that.

Looking at the config.log that you attached (thank you!), here's the
actual problem:

/lib/modules/2.6.17-10-generic/build/include/asm/processor.h:76: error: 
'CONFIG_X86_L1_CACHE_SHIFT' undeclared here (not in a function)
/lib/modules/2.6.17-10-generic/build/include/asm/processor.h:76: error: 
requested alignment is not a constant

So basically, the kernel headers as included by the OpenAFS configure
script don't compile.  This is very typical of the error message that
you're seeing.  Notice in the configure log that every test related to
the Linux kernel returns "no", and then the resulting source won't
build.

Almost every time we see an error like this, what it means is that the
Linux kernel maintainers have changed the headers and now certain other
headers have to be included before the ones that OpenAFS is including.
The kernel maintainers do this all the time and without warning and
believe that it's the responsibility of modules to try to keep up, and
OpenAFS then tries to adapt in the next version.  I expect that in this
case this is one of the many Linux kernel build issues that was fixed in
1.4.2, which is why the current Debian packages work.

It's probably possible to come up with a backport fix for just this
problem by inspecting the configure script in 1.4.2 and seeing what
additional headers it includes when doing kernel probes, although that
may be made more complicated by the fact that I think 1.4.2 does kernel
probes in general in a better (but different) way.  Coming up with that
sort of backport is fairly tedious, though.

-- 
openafs kernel modules don't build with edgy kernel 2.6.17
https://launchpad.net/bugs/52298

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