Mandrake ships compressed modules for 2.6, currently they are completed to 
module.ko that modprobe does not like. Patch simply strips off everything 
after first dot (I do not think any module is using dot in names or vene if 
this is allowed).

Also it adds trivial insmod support for module-init-tools enough for 2.6 (I am 
testing kernel module and being lazy ... :) I set styles as

if [[ "$(modprobe -V 2> /dev/null)" == module-init-tools* ]]; then
        zstyle ':completion:*:*:insmod:*' file-patterns '*.ko:modules 
*(-/):directories' '*:all-files'
else
        zstyle ':completion:*:*:insmod:*' file-patterns '*.o:modules 
*(-/):directories' '*:all-files'
fi

may be it makes sense to put in _modutils as default.

regards

-andrey