problem when make-kpkg the kernel image

I'm trying to compile kernel 2.6.5'the debian way'. Anyway, after i configure it as usual i run 'make-kpkg kernel-image'
and it seems to be going along fine, but it stuffs up somewhere along the
lines and prints this out:

depmod: *** Unresolved symbols in
/usr/src/linux-2.6.5/linux/debian/tmp-image/lib/modules/2.6.5/kernel/sound/pci/cs46xx/snd-cs46xx.ko

That's just an example. It prints a heap of those out and then bails out with:

make[2]: *** [_modinst_post] Error 1
make[2]: Leaving directory `/usr/src/linux-2.6.5/linux'
make[1]: *** [real_stamp_image] Error 2
make[1]: Leaving directory `/usr/src/linux-2.6.5/linux'

Anyone have any ideas?

apt-get install modutils module-init-tools

If you've already got those them perhaps upgrading to unstable will do.